Question

Please answer appropriately/correctly and typed so it is legible! Mary is planning a study to see if learning of 6th graders on a math lesson is affected by background noise level. She wants to use a t-test for independent groups to analyze her results. Help her plan her study. What is her independent variable (IV) here? Describe two conditions she could create for the IV in her study. What is her dependent variable (DV) here? Describe a way to measure the DV so that each participant would have one score at the end. Would this DV measure be on a continuous scale of measurement? Why is this important? Explain and justify.

Answer 1

The independent variable (IV) is 'background noise level'.

As Mary is planning to use t-test for independent groups, she must create two independent groups of background noise level. For this, she must first create two separate environments comprising of two distinct background noise levels.

One environment must have zero or almost nil background noise level and the other environment must have high or substantial background noise level.

The dependent variable (DV) is the 'level of learning 6th graders on a math lesson'

or performance on a math test

she has to make a measurement of test in answering of particular questions after teaching and offer marks in continuous scale