A researcher conducts the following study: "Does eating fruit improve your IQ" She gathered 100 people and did an IQ test for them. She then divided them into 4 groups, the first group were made to take no fruit for 3 months, the next group were made to take little fruits, the 3rd a lot of fruits. Then at the end of the 3 months, they took IQ test again to note the improvement levels in their IQ's or otherwise. The anxiety level of all of them were recorded. a. Is this an observational study or an experiment? Explain. group took more fruits, and the last group were made to take b) List some confounding or lurking variables. Name the Explanatory variable and the Response variable

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2. A researcher conducts the following study: "Does eating fruit improve your IQ" She gathered 100 people and did
an IQ test for them. She then divided them into 4 groups, the first group were made to take no fruit for 3 months,
the next group were made to take little fruits, the 3rd group took more fruits, and the last group were made to take
a lot of fruits. Then at the end of the 3 months, they took IQ test again to note the improvement levels in their
IQ's or otherwise. The anxiety level of all of them were recorded.
a. Is this an observational study or an experiment? Explain.
b) List some confounding or lurking variables.
c) Name the Explanatory variable and the Response variable
Transcribed Image Text:2. A researcher conducts the following study: "Does eating fruit improve your IQ" She gathered 100 people and did an IQ test for them. She then divided them into 4 groups, the first group were made to take no fruit for 3 months, the next group were made to take little fruits, the 3rd group took more fruits, and the last group were made to take a lot of fruits. Then at the end of the 3 months, they took IQ test again to note the improvement levels in their IQ's or otherwise. The anxiety level of all of them were recorded. a. Is this an observational study or an experiment? Explain. b) List some confounding or lurking variables. c) Name the Explanatory variable and the Response variable
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