문제지
분할표
집계표
정답률 비교(%)
학생별 점수 산출
  [10,20) [20,30) [30,40) [40,50) [50,60) [60,70) [70,80) [80,90) [90,100]
영문 1 6 3 18 12 15 7 0 0
국문 1 0 2 8 10 31 14 2 0
그룹별 통계요약
줄기-잎 그림(전체)
## 
##   The decimal point is 1 digit(s) to the right of the |
## 
##   1 | 22
##   1 | 
##   2 | 00044
##   2 | 8
##   3 | 2
##   3 | 6666
##   4 | 0044444444444
##   4 | 8888888888888
##   5 | 22222222222
##   5 | 66666666666
##   6 | 000000000000004444444444444444444444
##   6 | 8888888888
##   7 | 222222222222222
##   7 | 666666
##   8 | 00
줄기-잎 그림(영문)
## 
##   The decimal point is 1 digit(s) to the right of the |
## 
##   1 | 2
##   2 | 000448
##   3 | 666
##   4 | 004444444888888888
##   5 | 222222226666
##   6 | 000000444444488
##   7 | 2222226
줄기-잎 그림(국문)
## 
##   The decimal point is 1 digit(s) to the right of the |
## 
##   1 | 2
##   2 | 
##   3 | 26
##   4 | 44448888
##   5 | 2226666666
##   6 | 0000000044444444444444488888888
##   7 | 22222222266666
##   8 | 00
t-test
Welch Two Sample t-test: media_effects_score by media_effects$group
Test statistic df P value Alternative hypothesis mean in group 영문 mean in group 국문
-4.3 117 3.61e-05 * * * two.sided 51.1 61.3

Plots

Box Plots

QQ plot

ECDF plot