For each of the following scenarios, choose if you would run a dependent t-test
ID: 3060345 • Letter: F
Question
For each of the following scenarios, choose if you would run a dependent t-test or one-sample t-test, and explain why. Specify the dependent and independent variable for each scenario.
Scenario 1: You measure happiness levels of Philadelphia Eagles fans before and after the 2018 Superbowl.
Scenario 2: You want to see if lead levels in the water in Flint, Michigan have a signifcant impact on the vocabulary size of the average 6 year old in Flint compared to the national average vocabulary.
Scenario 3: You test the impact that different-colored ink has on students’ response to grading feedback. The first assignment is graded in red, the second in blue, the third in green, and the fourth in black.
Scenario 4: You want to see if a pizza shop has significantly more pizzas ordered over a full week in December or over a full week in June, looking at the amount of orders on a daily basis.
Scenario 5: You test if Ohio State University psychology gradutes more likely to go to graduate school within 5 years after graduation than the average psychology graduate.
Explanation / Answer
Scenario 1: You measure happiness levels of Philadelphia Eagles fans before and after the 2018 Superbowl.
Dependent t test
happiness is dependent variable
dependent test because the samples are dependent on each other.
super bowl is independent variable.
Scenario 2: You want to see if lead levels in the water in Flint, Michigan have a signifcant impact on the vocabulary size of the average 6 year old in Flint compared to the national average vocabulary.
one sample t test
dependent variable is vocablary size
one sample because here only single sample is given.
lead level in water is independent variable.
Scenario 3: You test the impact that different-colored ink has on students’ response to grading feedback. The first assignment is graded in red, the second in blue, the third in green, and the fourth in black.
Dependent t test . Samples are dependent on each other.
dependent variable is stdents response to grading feedback.
Type of different color is independent variable
Scenario 4: You want to see if a pizza shop has significantly more pizzas ordered over a full week in December or over a full week in June, looking at the amount of orders on a daily basis.
Dependent t test. samples are dependent.
dependent varaible is pizzas order
Season is independent variable
Scenario 5: You test if Ohio State University psychology gradutes more likely to go to graduate school within 5 years after graduation than the average psychology graduate.
one sample t test.
psychology students of ohio are dependent
average psychology students are independent
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