what is the independent variable for the tadpole diet experiment? what is the independent variable for the tadpole diet experiment?

In your experiment you keep all other factors, such as tadpole density per pan, temperature, pH, and the amount of food the same. In fact, there is only one thing that I do differently to the two pots: After a week, nine out of ten seeds in the watered pot have sprouted, while none of the seeds in the dry pot have sprouted. Redman says one of the biggest mistakes that companies make is simply not doing enough experiments not just randomized controlled experiments, but even more informal ones that are less costly and time intensive. Independent Variable The variable that is stable and unaffected by the other variables you are trying to measure. Where can you perform the experiment phase of the scientific method? One diet is a meat-based fish food, and the other is the traditional diet of boiled lettuce. He gives the example of two-year-olds, who are constantly running experiments: They think, If I scream, mom will come running. They are gathering data about the world, and while its not controlled, they are doing it purposively.. The other pot of seeds doesn't get any water at all. happy time mediterranean restaurant; sweet and spicy vinegar sauce 1 Answer. Make a strategy for testing the hypothesis - We will brake at various speeds but keep the car and other factors constant. Most experiments usually only have one independent variable and one dependent variable, but they will all have multiple constant variables. Independent variables are the variables that the experimenter changes to test their dependent variable. A variable is something you're trying to measure. What is the independent variable for the tadpole diet experiment? In your experiment you keep all other factors , such as tadpole density per pan , temperature , pH , and the amount of food the same . There are no official rules about how many times experiments should be repeated to be reliable. Interested in science? THEN ANSWER THE PRE-LAB QUESTIONS USING INFORMATION IN THIS BOOK. What might be influencing the dependent variable is the 'independent variable.'. Answer. Explanation: In this experiment, it is observed that how the change in the type of diet if meat diet is internalized how the average weight of tadpoles increase comparatively than other types of diet. Write up a research protocol, the process by which the experiment gets carried out. So, the number of hours of sleep is the independent variable. The x-axis is always independent of the y-axis. He grew three different cultures of the bacterium E. coli under three heat lamps at different temperatures. The independent variable is determined by the researcher. Tadpole Experiment 1. What would be natural to do in the experiment phase if the hypothesis is: "The heavier the ball, the faster it falls"? You have just finished weighing a pan of tadpoles at the conclusion of your experiment in which you sought to determine whether tadpoles that were fed the meat-based diet grew significantly larger than tadpoles who were fed boiled lettuce. In a psychology experiment, researchers study how changes in one variable (the . Acrylic Shapes Wholesale, container_memory_working_set_bytes vs container_memory_usage_bytes, Louisiana State Penitentiary Famous Inmates, johnson funeral home anderson sc obituaries. The hypothesis is: "The braking distance grows linearly with speed". Get the latest articles and test prep tips! You want to see if the meat-based diet will be associated with an increase in the average weight of the tadpoles. what is the independent variable for the tadpole diet experiment? ***Methods (procedures) The dependent variable goes on the y-axis, or vertical axis. What is the independent variable for the tadpole diet experiment? How big of a sample size do you need? The independent variable is the condition that you change in an experiment. That change is measured and recorded by the experimenter. It represents the cause or reason for an outcome.Independent variables are the variables that the experimenter changes to test their dependent variable. The dependent variable is the variable that changes in response to the independent variable. Suppose I decide to grow bean sprouts in my kitchen, near the window. With an experiment like the drill bit one, you may skip the pilot because of the cost and time involved in drilling a well. In a graph, the independent variable is always graphed on the x-axis (horizontal, bottom one); whereas, the dependent variable is groups on the y-axis (vertical, side one). This is what Redman calls taking the hidden bias out of the experiment. After all, if all the healthy patients get the treatment and then get better, you havent proven anything. Which graph would confirm the hypothesis Braking distance is proportional to speed? You want to see if the meat-based diet will be associated with an increase in the average weight of the tadpoles. A. In the _________ phase, you will carry out the strategy you developed for testing the hypothesis. . (2 Points) The independent variable in this experiment is the type of food that the tadpoles receive. Woodfrog tadpoles grow larger if fed a meat-based diet. What ecologists most wanted to know, however, was whether water temperature was causing bleaching for lots of different coral species in their natural setting. by CT Diamond. She has taught English and biology in several countries. As the experimenter changes the independent variable, the change in the dependent variable is observed and recorded. The only difference between your control and experimental groups is the type of food the tadpoles receive. A hypothesis isn't necessarily right. This cookie is set by GDPR Cookie Consent plugin. (2006-42) A scientist designed an experiment to test the effect of temperature on bacterial growth. Yes, but the hypothesis has to be backed up by your experiment, and predicted outcome. Independent and dependent variables are the two most important variables to know and understand when conducting or studying an experiment, but there is one other type of variable that you should be aware of: constant variables. Remember, the independent variable is what you control/change, and the dependent variable is what changes because of that. According to your lab, the variable that you manipulate during the experiment (the one that "varies"), is the _____________ variable. Scientific Method and Metric System lab charlie smith.docx As soon as you notice eggs, remove the parents from the tank and transfer them somewhere else until the goldfish are grown. what is the independent variable for the tadpole diet experiment? Especially in biology (which studies complex, living things), there is often variation in the material used for an experiment here, the bean seeds that the experimenter cannot see. To test my hypothesis, I do a controlled experiment. One diet is a meat-based fish food, and the other is the traditional diet of boiled lettuce. In order to make smart decisions at work, we need data. SAT is a registered trademark of the College Entrance Examination BoardTM. The independent variable is the cause. Our vetted tutor database includes a range of experienced educators who can help you polish an essay for English or explain how derivatives work for Calculus. Direct link to 's post What is another example o, Posted 3 years ago. You want to know which drill is better, but other factors,such asthe size of the well, its depth, and what youre digging through, will also affecthow efficiently you drill the wellandcomplicate your evaluation of the new drill. analysis, Science is about coming up with a hypothesis and, analyze your data and place it on a graph. You can go back and estimate the values when the experiment is complete. You want to see if the meatbased diet will be associated with an increase in the average weight of the tadpoles. Identify the independent and the dependent variable case 1: Its value depends on changes in the independent variable. In your experiment you keep all other factors, such as tadpole density, temperature, pH, and the amount of food, constant. Tadpoles will be larger if fed a meat-based diet. There are two ways to identify the independent variable. That's a great way of thinking about it. You can use dozens of filters and search criteria to find the perfect person for your needs. what is the independent variable for the tadpole diet experiment? Tadpoles will be larger if the pH is higher. It's common to put the units in parentheses next to the axis titles, which this graph does. Even managers who are willing to call for experiments often dont plan the experiment carefully enough. hbspt.cta._relativeUrls=true;hbspt.cta.load(360031, '21006efe-96ea-47ea-9553-204221f7f333', {"useNewLoader":"true","region":"na1"}); These recommendations are based solely on our knowledge and experience. For example, in the example above, if there were no constants and you used different amounts of water, different types of plants, different amounts of fertilizer and put the plants in windows that got different amounts of sun, you wouldn't be able to say how fertilizer type affected plant growth because there would be so many other factors potentially affecting how the plants grew. An easy way to think of independent and dependent variables is, when you're conducting an experiment, the independent variable is what you change, and the dependent variable is what changes because of that. Its value is known to the researcher, unlike the dependent variable whose values are yet to be determined through the experiment. In your experiment you keep all other factors, such as tadpole density per pan, temperature, pH, and the amount of food the same. It's what changes as a result of the changes to the independent variable. What are Independent and Dependent Variables? - Simply Psychology He also advises organizations on their data and data quality programs. If each one had different temperatures, then you have too many variables. An example of a dependent variable is how tall you are at different ages. The dependent variable is the effect. [2] In the design of experiments, an independent variable's values are controlled or selected by the experimenter to determine its relationship to an observed phenomenon (i.e., the dependent variable). Two examples of common independent variables are age and time. It is called independent because its value does not depend on and is not affected by the state of any other variable in the experiment. The only difference between your control and experimental groups is the type of food the tadpoles receive. Imagine that you wish to compare two different diets that will be fed to tadpoles raised in a lab. Analysis - draw graphs, evaluate the hypothesis. ThoughtCo, Jul. Access more than 40 courses trusted by Fortune 500 companies. Solved Scientific Method Lab Ho.. Help Save & Exit Submit 19 - Chegg How do you determine independent and dependent variables? The only difference between your control and experimental groups is the type of food the tadpoles receive. Wan et al. if you planted different types of seeds in each of the pots, trying to determine if soil type affected germination, you might find some types of seeds germinate faster than others. The first is to write the hypothesis and see if it makes sense: Only one of these statements makes sense. In order to make smart decisions at work, we need data. In a controlled experiment, I postulate that, based on the null hypothesis, the tadpoles' weight will really either rise or decrease depending on their meals. I put bean seeds in a pot with soil, set them on the windowsill, and wait for them to sprout. Question 3 Imagine that you wish to compare two different diets that will be fed to tadpoles raised in a lab. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. If you purchase an item through one of our links, PrepScholar may receive a commission. As the experimenter changes the independent variable, the change in the dependent variable is observed and recorded. Direct link to kelly smith's post why not test different ac, Posted 4 years ago. Scientific experimentation can occur anywhere, depending upon the problem being examined. a. The independent variable for the tadpole diet experiment are the amount of food given to the tadpole, temperature, pH, density because an independent variable is defined as the variable that is changed or controlled in a scientific experiment .It represents the cause or the reson for an outcome (dependent variable) that is increase in the average weight. A researcher can control the number of hours a student sleeps. This makes it easy for you to quickly see which variable is independent and which is dependent when looking at a graph or chart. One diet is a meat-based fish food, and the other is the traditional diet of boiled lettuce. Imagine that you want to compare a new diet for tadpoles that are reared in the laboratory to the traditional laboratory diet of boiled lettuce. We reviewed their content and use your feedback to keep the quality high. Formulating a hypothesis is the one and only thing that distinguishes a scientist from an astrologist. A Refresher on Randomized Controlled Experiments - Harvard Business Review which factor will you vary in order to test the hypothesis? Experiment 1: You want to figure out which brand of microwave popcorn pops the most kernels so you can get the most value for your money. - Tadpole size - Lab conditions - Species of tadpole - Diet. That will give you a more reliable result in terms of how the new and old drill bits perform under similar circumstances, but it will also cost you a lot of money to do, and you wont make any money in the process. One of the more structured experiments is the randomized controlled experiment. Answer: D Explanation: Each of . When you formulate your hypothesis, it is important to be sure that it is an idea that can be ______. Reliable Hitachi Vantara storage systems are the backbone of many innovative companies over the world for whom data availability is crucial. Imagine that you wish to compare two different diets that will be fed to tadpoles raised in a lab. According to convention, in the example where the hypothesis is: "The braking distance grows linearly with the speed", what usually will be graphed on the y- axis? Biology. It's even possible for the dependent variable to remain unchanged in response to controlling the independent variable. All rights reserved. Dependent Variable The variable that depends on other factors that are measured. The independent variable is the reason a change occurs in the dependent variable. Scenario 1: You buy your dog multiple brands of food to see which one is her favorite. It does not store any personal data. Nope, you can have multiple independent and/or multiple dependent variables. The independent variable is what you change, and the dependent variable is what changes as a result of that. Which factor will you vary in order to test the hypothesis? From the graph, it looks like studying up to six hours helped her raise her score, but as she studied more than that her score dropped slightly. Some types of hypotheses can't be tested in controlled experiments for ethical or practical reasons. View Tadpole Experiment.docx from BIOL 101 at West Virginia University. How to determine an independent variable? For example, this program would generally predict bleaching for a particular reef when the water temperature in the reef's area exceeded its average monthly maximum by, The computer program was able to predict many bleaching events weeks or even months before they were reported, including a large bleaching event in the Great Barrier Reef in 1998, Posted 6 years ago. Constant variables are also important to understand. An independent variable is the variable that is changed in a scientific experiment. The new diet is a meat-based commercial fish food. You want to decide if the new diet will be associated with an increase in the average weight of the tadpoles. Yep! Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Variables - Working scientifically - KS3 Science - BBC Bitesize You make money in the real world. The only difference between your control and experimental groups is the type of food the tadpoles receive Which is a good hypothesis for this tadpole experiment? Maybe the One diet is meat-based fish food, and the other is traditional diet of boiled lettuce.You want to see if the meat-based diet will be associated with an increase in the average weight of the tadpoles. The value of the dependent variable is measured. What was the independent variable in this experiment? In high school she scored in the 99th percentile on the SAT and was named a National Merit Finalist. An easy way to keep the two variables straight is to use the acronym DRY MIX, which stands for: Students are often asked to identify the independent and dependent variable in an experiment. It can be practically anything, such as objects, amounts of time, feelings, events, or ideas. What is the independent variable for the tadpole diet experiment? B. Tadpole size will be unpredictable if fed a meat-based diet. Photograph showing a bleached, white coral in the foreground and a healthy, brownish coral in the background. How do you measure an independent variable? The amount of time studied is the independent variable, because it's what she changed, so it's on the x-axis. Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. What you find in a laboratory experiment may not always hold up in the field. Daz et al 2023 The amphibians of Cuba | Request PDF In your experiment you keep all other factors, such as tadpole density per pan, temperature, pH, and the amount of food the same.