
AP Stats Midterm
Flashcard
•
Mathematics
•
12th Grade
•
Practice Problem
•
Hard
+3
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a residual in the context of regression analysis?
Back
A residual is the difference between the observed value and the predicted value from a regression model. It indicates how far off the prediction is from the actual data point.
Tags
CCSS.HSS.ID.B.6B
2.
FLASHCARD QUESTION
Front
How do you interpret the slope of a least-squares regression line?
Back
The slope represents the average change in the dependent variable for each one-unit increase in the independent variable.
Tags
CCSS.8.SP.A.3
3.
FLASHCARD QUESTION
Front
What does a residual plot show?
Back
A residual plot displays the residuals on the vertical axis and the independent variable on the horizontal axis. It helps to assess the fit of a regression model.
Tags
CCSS.HSS.ID.B.6B
4.
FLASHCARD QUESTION
Front
What is the purpose of calculating probabilities in statistics?
Back
Calculating probabilities helps to quantify the likelihood of different outcomes, which is essential for making informed decisions based on data.
5.
FLASHCARD QUESTION
Front
What is the Central Limit Theorem?
Back
The Central Limit Theorem states that the distribution of the sample means will approach a normal distribution as the sample size increases, regardless of the population's distribution.
6.
FLASHCARD QUESTION
Front
What does it mean if a data set is normally distributed?
Back
A normally distributed data set has a symmetric bell-shaped curve, where most of the observations cluster around the mean, and the probabilities for values further away from the mean taper off equally in both directions.
7.
FLASHCARD QUESTION
Front
How do you calculate the mean of a data set?
Back
The mean is calculated by summing all the values in the data set and dividing by the number of values.
Tags
CCSS.6.SP.B.5C
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