AP Statistics 2017

a. Would you describe the point marked with a box as an outlier, influential point, neither, or ...

The residual pattern seems quite random. A line still appears to be a good model for the data. ...

I . Let β = the true slope of the regression line for predicting SAT Math score from the percen ...

4. P (7) = 1 – (0.15 + 0.25 + 0.40) = 0.20. μ (^) x = 2(0.15) + 6(0.25) + 7(0.20) + 9(0.40) = 6.8. ...

CHAPTER 13 Inference for Regression The following regression output is for predicting the number of calories ...

(A) The scatterplot looks linear and there is no curve in the residual plot, so a significance test ...

The appropriate critical value to construct a 90% confidence interval for the slope of the regression line i ...

CHAPTER 14 Inference for Categorical Data: Chi-square IN THIS CHAPTER Summary: In this final chapter, we wil ...

categorical variable measured across two or more populations (called a chi-square test for homogeneity of prop ...

read from a table of X 2 critical values or determined from a calculator. There is a X 2 tab ...

H (^) A : at least one of these proportions is incorrect. II . We will use the χ^2 goodness-of-fit test. T ...

example: The statistics teacher, Mr. Hinders, used his calculator to simulate rolling a die 96 times and st ...

X 2 = 4.75 (calculator result), df = 6 – 1 = 5 P -value > 0.25 (Table C) or P -value = ...

Chi-Square Test for Independence A random sample of 400 residents of a large western city are polled to dete ...

solution: There are two ways to approach finding an expected value, but they are numerically equivalent and you ...

that we have the conditions present to do a χ^2 -test, but this is the way we’ll find our expected ...

Do these data provide evidence, at the 0.02 level of significance, that the crime rate is associated ...

Because “Male” and “Female” are now considered separate populations, we do not ask if gender and political part ...

II . We will use a chi-square test for homogeneity of proportions. The samples of tenured and nontenured ...

a. the study was a goodness-of-fit test with n = 12? b. the study was a test of independence ...