Descriptive Statistics

Cross Tables

  식생활을 고치세요 식생활이 보통입니다 식생활이 대체로 좋아요 결석 계
시청 전 83 44 4 22 153
시청 후 9 63 61 20 153

Percentages

  식생활을 고치세요 식생활이 보통입니다 식생활이 대체로 좋아요 계
시청 전 63.4 33.6 3.1 100
시청 후 6.8 47.4 45.9 100

Summary Statistics

  • Red:

    Min. 1st Qu. Median Mean 3rd Qu. Max. NA’s
    -4 14 23 22.79 30.5 58 12

  • Black:

    Min. 1st Qu. Median Mean 3rd Qu. Max. NA’s
    4 16 20 21.12 28 46 11

Standard Deviation

Red Black
12.38 9.414

t test (Welch’s)

One Sample t-test: diff
Test statistic df P value Alternative hypothesis mean of x
22.86 129 1.698e-47 * * * greater 21.93
Welch Two Sample t-test: diff by group
Test statistic df P value Alternative hypothesis mean in group Red mean in group Black
0.8641 115.6 0.3893 two.sided 22.79 21.12

Plots

Stem and Leaf

## 
##   The decimal point is 1 digit(s) to the right of the |
## 
##   -0 | 4
##    0 | 2466666888
##    1 | 22444446668
##    2 | 00000002234444466666888
##    3 | 001222266688
##    4 | 00468
##    5 | 8
## 
## 
##   The decimal point is 1 digit(s) to the right of the |
## 
##   0 | 44
##   0 | 66888
##   1 | 00222224
##   1 | 6666666888888888
##   2 | 0000012222244444
##   2 | 66888888
##   3 | 022244
##   3 | 666
##   4 | 22
##   4 | 6
## $Red
## NULL
## 
## $Black
## NULL

Box plot

QQplot