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Parameter

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AP Statistics

Definition

A parameter is a numerical value that describes a population. It represents a characteristic or feature of the entire group being studied.

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Practice Questions (8)

For the parameter slope of the regression line, what would lie within the interval (0.3, 1.2)?
What are the degrees of freedom for the t-distribution when testing the slope of a regression model with only one parameter?
If the parameter in question is the mean, which type of hypothesis test should be used?
13.1 percent of people in the United States are left-handed. Is this value a parameter or a statistic?
In a study, 500 cars were selected and their average fuel efficiency was calculated. Is the average fuel efficiency a parameter or a statistic?
A survey is conducted to estimate the proportion of students in a college who own a smartphone. 800 students are selected from the college, and it is found that 600 students own a smartphone. Is the proportion of students who own a smartphone a parameter or a statistic?
The mean age of people in the United States is 38.1 years. Is this value a parameter or a statistic?
What is the difference between a parameter and a statistic?

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