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

If they don't find new symbionts and the factors which contribute to bleaching persist, then the coral might die of starvation or disease. Managers are expected to know answers. It is the variable you control. Its value depends on changes in the independent variable. SAT is a registered trademark of the College Entrance Examination BoardTM. What would be natural to do in the experiment phase if your hypothesis is: " The breaking distance grows linearly with speed"? The . Wellit turns out I forgot to water the seeds. If you purchase an item through one of our links, PrepScholar may receive a commission. How do you measure an independent variable? The point is that a researcher knows the values of the independent variable. The dependent variable is the effect. Louisiana State Penitentiary Famous Inmates, 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. To better understand what a randomized controlled experiment is and how businesses use them, I talked with Tom Redman, author ofData Driven: Profiting from Your Most Important Business Asset. 2003-2023 Chegg Inc. All rights reserved. Suppose you have the speed on the x axis and braking distance on the y axis, which graph would confirm the hypothesis "Braking distance is proportional to speed? What do you do in the report phase of the scientific method? The amount of time studied is the independent variable, because it's what she changed, so it's on the x-axis. Biology questions and answers. View Tadpole Experiment.docx from BIOL 101 at West Virginia University. Identify independent variable Imagine that you wish to compare two different diets that will be fed to tadpoles raised. All kinds of businesses can conduct these experiments, and they necessarily dont need to be costly or time consuming they just need to be controlled and include an element of randomization., Lets start with the word experiment. In an experiment, the variable of interest is called your dependent variable (note that you might have multiple dependent variables, but for the sake of simplicity here, Ill refer to one dependent variable). You can go back and estimate the values when the experiment is complete. After youve analyzed the results (and likely tested whether they are statistically significant) you put the results into practice. How do you determine independent and dependent variables? $$ Both contain ten bean seeds planted in the same type of soil, and both are placed in the same window. There are different ways to title a graph, but a common way is "[Independent Variable] vs. [Dependent Variable]" like this graph. What ecologists most wanted to know, however, was whether water temperature was causing bleaching for lots of different coral species in their natural setting. Woodfrog tadpoles grow larger if fed a meat-based diet. The dependent variable (height) depends on the independent variable (age). Scoring well on standardized tests is an important part of having a strong college application. The amount that the plants grow depends on the amount of sun they get. An independent variable is defines as the variable that is changed or controlled in a scientific experiment. https://en.wikipedia.org/wiki/Survey_(human_research)#Reported_behavior_versus_actual_behavior, https://www.ncbi.nlm.nih.gov/books/NBK43321/. Where that data comes from and how we analyze it depends on a lot of factors for example, what were trying to do with the results, how accurate we need the findings to be, and how much of a budget we have. What is the independent variable for the tadpole diet experiment ? Does there always have to be one independent variable and one dependent variable in an experiment? One diet is a meat-based fish food, and the other is the traditional diet of boiled lettuce. what is the independent variable for the tadpole diet experiment? Answer: D Explanation: Each of . Heres a more business-related example. To test my hypothesis, I do a controlled experiment. You want to see if the meat-based diet will be associated with an increase in the average weight of the tadpoles. Analyze the results, looking for both planned results and keeping your eyes open for unexpected ones. Experiment 3: You're interested in how rising sea temperatures impact algae life, so you design an experiment that measures the number of algae in a sample of water taken from a specific ocean site under varying temperatures. What Are the Elements of a Good Hypothesis? Periodic Table Symbols Quiz, In the tadpole diet experiment, it would be sufficient to test only one single pan of tadpoles that were fed lettuce, and only one single pan of tadpoles fed meat. Corals normally have tiny photosynthetic organisms living inside of them, and bleaching happens when they leave the coral, typically due to environmental stress. Ask questions; get answers. The dependent variable goes on the y-axis, or vertical axis. Read our guide to learn which science classes high school students should be taking. In high school she scored in the 99th percentile on the SAT and was named a National Merit Finalist. A researcher can control the number of hours a student sleeps. 29, 2021, thoughtco.com/definition-of-independent-variable-605238. 4. The independent variable is determined by the researcher. One diet is a meat-based fish food, and the other is the traditional diet of boiled lettuce. So hypotheses are like conditional statements? If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. 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? H1: Caregiver's rules . Control Group = Those participants treated just like the experimental group EXCEPT they are not. It's even possible for the dependent variable to remain unchanged in response to controlling the independent variable. The experiments and process should be unbiased and orderly, and the results should be repeatable. Variables - Working scientifically - KS3 Science - BBC Bitesize An experiment is a planned activity whose purpose is to learn something about the world, explains Redman. As you can see, this is a graph showing how the number of hours a student studies affects the score she got on an exam. Which is a good hypothesis for this tadpole experiment? Making sure that you come up with a hypothesis that makes a true statement is by far the most important aspect of the scientific method. The two main variables in a science experiment are the independent variable and the dependent variable. In a psychology experiment, researchers study how changes in one variable (the . The dependent variable (sometimes known as the responding variable) is what is being studied and measured in the experiment. A change in the independent variable directly causes a change in the dependent variable. hbspt.cta.load(360031, '4efd5fbd-40d7-4b12-8674-6c4f312edd05', {}); Have any questions about this article or other topics? A good example of hypothesis testing based on observation comes from early studies of coral bleaching. Most experiments usually only have one independent variable and one dependent variable, but they will all have multiple constant variables. Think of an independent variable as a cause that. This doesn't mean that they have died - if the corals find a different nutrient-supplying species, they can regenerate and stabilize again. Its value is independent of other variables in your study. 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. 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. We specialize in professional IT services /Data Center, Collaboration, Cloud and Virtualisation solutions/ and business software solutions based on Microsoft Dynamics NAV and CRM product family, BI and LS Retail. species reduced versus the reducing agent. But failing to do this means you could attribute the results to the wrong factors. Which statement regarding the scientific method is false? Why do scientists put so much effort into documenting their experiment and analysis? By clicking Accept All, you consent to the use of ALL the cookies. That would control for the expected hardness. Analysis - draw graphs, evaluate the hypothesis. diet tadpole size species of tadpole lab . For example, if we want to explore whether high concentrations of vehicle exhaust impact incidence of asthma in children, vehicle . So, I hypothesize that they didn't sprout due to lack of water. For example, in Experiment 2 above, some of the constant variables would be the type of plant being grown, the amount of fertilizer each plant is given, the amount of water each plant is given, when each plant is given fertilizer and water, the amount of sunlight the plants receive, the size of the container each plant is grown in, and more. Sometimes you may hear this variable called the "controlled variable" because it is the one that is changed. Let's see how this simple example illustrates the parts of a controlled experiment. The dependent variable is what is being measured in an experiment or evaluated in a mathematical equation and the independent variables are the inputs to that measurement. The independent variable is the variable the experimenter manipulates or changes, and is assumed to have a direct effect on the dependent variable. Number of bacteria c. generation Reproduction rate d. 4 How do you measure an independent variable? Identifying control variables, independent and dependent variables is important in making experiments fair. 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. Usually in an experiment, youre trying to learn something about one, or at most a few, independent variables, but a lot of other factors can get in the way, says Redman. draw graphs, evaluate results, and evaluate the hypothesis. what is the independent variable for the tadpole diet experiment? Our experienced team of professionals every day work on efficient solutions that support POS management in such diverse sectors as fashion, electronics, furniture, duty free zones, restaurants, cafes and more. which factor will you vary in order to test the hypothesis? create a strategy and formulate a hypothesis. As one of the first partners in Poland we implemented VersaStack the worlds first integrated infrastructure based on IBM Storwize and Cisco UCS. Which is true of the independent variable of an experiment? This is different than the independent variable in an experiment, which is a variable . For example, you can probably better control for the hardness of the rock by setting up two rigs 50 feet apart in the same location and digging dry wells. We also use third-party cookies that help us analyze and understand how you use this website. What is a control variable? What is the independent variable for an experiment comparing different tadpole diets? Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Woodfrog tadpoles grow larger if fed a meat-based diet. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". However, you may visit "Cookie Settings" to provide a controlled consent. Experts are tested by Chegg as specialists in their subject area. Analytical cookies are used to understand how visitors interact with the website. What do you do in the lab smart experiment phase? Researchers often manipulate or measure independent and dependent variables in studies to test cause-and-effect relationships. Our new student and parent forum, at ExpertHub.PrepScholar.com, allow you to interact with your peers and the PrepScholar staff. Why is the testing strategy important in the design of an experiment? It can be a lot easier to understand the differences between these two variables with examples, so let's look at some sample experiments below. You can also think of the independent variable as the cause and the dependent variable as the effect. The only difference between your control and experimental groups is the type of food the tadpoles receive. If you don't understand what these two variables are and how they differ, you'll struggle to analyze an experiment or plot equations. When researchers are interested in whether past diet as an independent variable may affect a dependent variable such as health status, they conduct a [glossary term:] retrospective study (also known as a case-control study) . Hypothesis - create a strategy formulate a hypothesis Download it for free now: hbspt.cta._relativeUrls=true;hbspt.cta.load(360031, '688715d6-bf92-47d7-8526-4c53d1f5fe7d', {"useNewLoader":"true","region":"na1"}); hbspt.cta._relativeUrls=true;hbspt.cta.load(360031, '03a85984-6dfd-4a19-93c8-5f46091f5e2b', {"useNewLoader":"true","region":"na1"}); Need more help with this topic? You want to know how this new, more expensive bit compares to the bit youre currently using, so you conduct an experiment comparing your existing drill bit with the new one. A/An ___________ should be based on background knowledge and observations. The independent variable is graphed on the x-axis. When people hear the term, they most often think of clinical trials, where one group is given a treatment and another a placebo, but pharmaceutical companies and medical scientists arent the only ones using these types of experiments. Student test scores have no effect on the number of hours the students sleeps. a. Answer. A Comprehensive Guide. Bleaching results in starvation, which is indicated by loss of color. This cookie is set by GDPR Cookie Consent plugin. A hypothesis isn't necessarily right. The independent variable remains the independent variable throughout the experiment. Which question can you ask yourself to determine the dependent variable of an experiment? Suppose I decide to grow bean sprouts in my kitchen, near the window. We've written a guide for each test about the top 5 strategies you must be using to have a shot at improving your score. You test different brands of popcorn to see which bag pops the most popcorn kernels. Example: You're asked to identify the independent and dependent variable in an experiment looking to see if there is a relationship between hours of sleep and student test scores. 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. In the example regarding sleep and student test scores, it's possible the data might show no change in test scores, no matter how much sleep students get (although this outcome seems unlikely). Direct link to Colin Andrews's post If each one had different, Posted 5 years ago. Anywhere depending upon the problem being examined.