Using the California School Data Set from Your Textbook, You $\widehat {\text { TestScr }}$

question 43

Essay

Using the California School data set from your textbook, you run the following regression: $\widehat {\text { TestScr }}$ = 698.9 - 2.28 STR
n = 420, SER = 9.4
_{where TestScore is the average test score in the district and STR is the student-teacher ratio. The sample standard deviation of test scores is 19.05, and the sample standard deviation of the student teacher ratio is 1.89.
a.}
Find the regression R² and the correlation coefficient between test scores and the student teacher ratio.
b.
Find the homoskedasticity-only standard error of the slope.

---

Definitions:

Swing

A kind of music that originated in the early 20th century, characterized by a strong rhythm section and improvisation.

Racially Inclusive

An approach or policy that intentionally includes people of all races, aiming to promote diversity, equality, and non-discrimination in various settings.

Widespread Popularity

The state of being well-known or favored by a large number of people across various regions or demographics.

Southern Negro Youth Conference

An influential African American civil rights organization founded in the 1930s to promote social change and empowerment among black youth in the southern United States.