In: Statistics and Probability
Problem Set 1: Chi Square Goodness of Fit (7 pts) A teacher believes that the percentage of students at her high school who go on to college is lower than the rate in the general population of high school students. The rate in the general population is 69.7% (BLS, 2017). In the most recent graduating class at her high school, the teacher found that of 104 who graduated, 61 of those went on to college. |
Frequencies |
Went to college |
Did not go on to college |
Observed |
(answer) |
(answer) |
Expected |
(answer) |
(answer) |
WORK:
Frequencies | Went to college | Did not go on to college | Total |
Observed | 61 | 43 | 104 |
Expected | 72.49 | 31.51 | 104 |
Work:
Expected frequency(went to college)
Expected frequency(did not go on to college)
The appropriate SPSS output is,
Category |
|||
Observed N |
Expected N |
Residual |
|
Went to college |
61 |
72.5 |
-11.5 |
Do not go on to college |
43 |
31.5 |
11.5 |
Total |
104 |
Test Statistics |
|
Category |
|
Chi-Square |
6.011a |
df |
1 |
Asymp. Sig. |
.014 |
a. 0 cells (0.0%) have expected frequencies less than 5. The minimum expected cell frequency is 31.5. We reject the null hypothesis. That is, the percentage of students who go on to college is lower than the rate in the general population of high school students. Please upvote my answer if you find it helpful. Thanking you. |