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[AP Statistics] 3.1a - Scatterplots

Last updated 5 months ago
15 questions
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Identify the explanatory variable and response variable for the following relationships, if possible. Explain your reasoning.

(a) The score on a statistics final exam and the number of hours studied for a sample of students

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(b) The weight and the price for a sample of diamonds

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(c) The final exam score for statistics and the final exam score for biology for a sample of students taking both courses

This is a scatter plot showing the Number of Starbursts (Response Variable) that a person can hold based on the length of the span of their hand (Explanatory Variable)
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You are given the following data representing the number of hours students spend studying for an exam and their corresponding exam scores:


Create a scatter plot for this data. Make sure to label your axes appropriately

Two variables have a positive association when above-average values of one variable tend to accompany above-average values of the other variable and when below-average values also tend to occur together.

Number of baseball wins for an MLB team vs Team Payroll
Notice the positive slope
Two variables have a negative association when above-average values of one variable tend to accompany below-average values of the other variable.

Number of wins for an MLB team vs Number of Runs allowed by the team
Notice the negative slope
There is no association between two variables if knowing the value of one variable does not help us predict the value of the other variable.

Amount of sleep vs Height
No apparent pattern to the data
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What type of association is shown in the scatterplot below?

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What type of association is shown in the scatterplot below?

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What type of association is shown in the scatterplot below?

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The questions that follow are from the textbook (Section 3-1). I'll mostly post odd questions so you can find the answers in the back of the book.
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Are there any problems above that you would like to go over in class? Indicate the question numbers below (Numbers refer to the Formative question number). I'll try to cover anything that is highly requested.