AP Stats Vocabulary

Match the following:

• r

• Y-Intercept

• r²

• Slope

• a

• Standard Deviation of Residuals

• b

• Coefficient of Determination

• s

• Correlation Coefficient

Match the following

• Extrapolation

• Model that minimizes

  the sum of the squares of the residuals and

  contains the point (x̄, ȳ)

• LSRL

• Shows two numeric values for each observation, one corresponding to the value on the x-axis and one corresponding to the value on the y-axis.

• Influential Point

• _____ in regression has a

  substantially larger or smaller x-value than the

  other observations have.

• High-Leverage Point

• _____ in regression is any point that, if removed, changes the relationship substantially.

• Scatterplot

• Predicting a response value

  using a value for the explanatory variable that is

  beyond the interval of x-values used to determine

  the regression line

What does r² stand for?

• correlation coefficient

• coefficient of determination

• slope of the line of best fit (LOBF) for a sample

• slope of the line of best fit (LOBF) for a population

What does this symbol represent?

• sample mean

• population standard deviation

• population mean

• sample mew

What does this symbol represent?

• mean of the parameter

• mean of a population

• mean of a sample

• mean of a proportion

A strong positive correlation has a r close to_____

• 0.93

• 0.49

• -1

• 0

A weak negative correlation has a r close to _______

• -1

• -0.49

• 0.93

• 0

What does r stand for?

• correlation coefficient

• coefficient of determination

• slope of the line of best fit (LOBF) for a sample

• slope of the line of best fit (LOBF) for a population

A numerical value of a sample is called a...

If you order all numerical values of a study and you take the one right in the middle, that value is called the...