Descriptive Statistics

Cross Tables

  식생활을 고치세요 식생활이 보통입니다 식생활이 대체로 좋아요 불참 계
시청 전 239 177 30 37 483
시청 후 32 202 203 46 483

Percentages

  식생활을 고치세요 식생활이 보통입니다 식생활이 대체로 좋아요 계
시청 전 53.6 39.7 6.7 100
시청 후 7.3 46.2 46.5 100

Summary Statistics

  • Red:

    Min. 1st Qu. Median Mean 3rd Qu. Max. NA’s
    -6 10 18 19.03 28 58 20

  • Black:

    Min. 1st Qu. Median Mean 3rd Qu. Max. NA’s
    -8 8 16 18.04 26 58 26

Standard Deviation

Red Black
13.25 12.66

t test (Welch’s)

One Sample t-test: diff
Test statistic df P value Alternative hypothesis mean of x
29.92 436 5.133e-108 * * * greater 18.56
Welch Two Sample t-test: diff by group
Test statistic df P value Alternative hypothesis mean in group Red mean in group Black
0.8001 433.9 0.4241 two.sided 19.03 18.04

Plots

Stem and Leaf

## 
##   The decimal point is 1 digit(s) to the right of the |
## 
##   -0 | 6
##   -0 | 44222222
##    0 | 00000000222222222224444444444444
##    0 | 666688888888888
##    1 | 00000000000000222222222222222444444444444
##    1 | 66666666888888888888
##    2 | 000000000000222222222222222244444444444444
##    2 | 6666666668888888888
##    3 | 00000002222222444444444444
##    3 | 6666688888
##    4 | 000222
##    4 | 68
##    5 | 00024
##    5 | 88
## 
## 
##   The decimal point is 1 digit(s) to the right of the |
## 
##   -0 | 866
##   -0 | 2222222
##    0 | 00000002224444444
##    0 | 6666666666666666888888888888
##    1 | 0000000000222222222444444444444444444
##    1 | 66666666666668888888888888888
##    2 | 0000000000022222222222444444444
##    2 | 66666666668888888
##    3 | 00000022222222444444
##    3 | 666668
##    4 | 02222444
##    4 | 
##    5 | 224
##    5 | 68
## $Red
## NULL
## 
## $Black
## NULL

Box plot

QQplot