All AP Statistics Resources
Example Questions
Example Question #1 : How To Find Confidence Intervals For The Slope Of A Least Squares Regression Line
You estimate a regression model with and
, where
is the beta coefficient and
is the standard error. Construct 95% confidence intervals for
.
Possible Answers:
Correct answer:
Explanation:
To construct 95% confidence intervals for , we simply take the coefficient and add/subtract
. This is because
is assumed to follow a symmetrical distribution (the normal), and 95% of the values in the sampling distribution are contained within 1.96 standard errors of
.
All AP Statistics Resources
Popular Subjects
Spanish Tutors in Dallas Fort Worth, GRE Tutors in New York City, Algebra Tutors in Houston, Reading Tutors in Miami, Chemistry Tutors in Denver, Biology Tutors in Atlanta, SSAT Tutors in Los Angeles, Chemistry Tutors in San Francisco-Bay Area, Statistics Tutors in San Diego, English Tutors in Washington DC
Popular Courses & Classes
LSAT Courses & Classes in Washington DC, MCAT Courses & Classes in Phoenix, LSAT Courses & Classes in Houston, SSAT Courses & Classes in Denver, ACT Courses & Classes in San Francisco-Bay Area, ISEE Courses & Classes in Miami, ACT Courses & Classes in Philadelphia, GMAT Courses & Classes in Seattle, GMAT Courses & Classes in Houston, SSAT Courses & Classes in Philadelphia
Popular Test Prep
GMAT Test Prep in Los Angeles, ACT Test Prep in Denver, ACT Test Prep in Philadelphia, MCAT Test Prep in Phoenix, ACT Test Prep in San Francisco-Bay Area, SSAT Test Prep in Philadelphia, GMAT Test Prep in Houston, SSAT Test Prep in San Diego, GRE Test Prep in Boston, SAT Test Prep in Phoenix
