AP Statistics Unit 2 Vocabulary Quiz

Two variable data

Reorder the following in ascending order of correlation coefficient values.

• Negative Strong

• Negative Moderate

• No Association

• Positive

  Weak

• Positive Perfect

Match the following:

• s

• Coefficient of Determination

• r

• Correlation Coefficient

• r²

• Standard Deviation of Residuals

• b

• Slope

• a

• Y-Intercept

Match the following:

• Correlation Coefficient

• Calculates how much the data points spread around the regression line. The result is used to measure the error of the regression line's predictability.

• Slope

• The proportion of variation in the response variable that is explained by the

  explanatory variable in the model.

• Coefficient of Determination

• The value of the dependent variable when x equals zero.

• Y-Intercept

• Change in the dependent variable divided by the change in the independent variable.

• Standard Deviation of Residuals

• Gives the direction and

  quantifies the strength of the linear association

  between two quantitative variables.

The C in CDOFS

The D in CDOFS

The O in CDOFS

The F in CDOFS

The S in CDOFS

As observational study can show ​ (a)   . When one variable has an association with another.

An experiment can show ​ (b)   . When one variable created a reaction by another.

• correlation
• causation
• extrapolation
• cessation
• remediation