Descriptive statistics Whites Blacks count 30 30 mean 7.27 7.90 sample variance
ID: 2915572 • Letter: D
Question
Descriptive statistics
Whites
Blacks
count
30
30
mean
7.27
7.90
sample variance
8.27
5.75
sample standard deviation
2.88
2.40
minimum
1
1
maximum
10
10
range
9
9
1st quartile
5.00
6.25
median
8.00
8.50
3rd quartile
10.00
10.00
interquartile range
5.00
3.75
mode
10.00
10.00
low extremes
0
0
low outliers
0
0
high outliers
0
0
high extremes
0
0
Descriptive statistics
Whites
Blacks
count
30
30
mean
7.27
7.90
sample variance
8.27
5.75
sample standard deviation
2.88
2.40
minimum
1
1
maximum
10
10
range
9
9
1st quartile
5.00
6.25
median
8.00
8.50
3rd quartile
10.00
10.00
interquartile range
5.00
3.75
mode
10.00
10.00
low extremes
0
0
low outliers
0
0
high outliers
0
0
high extremes
0
0
Explanation / Answer
From the data whites median = 8 and blacks median is8.50 Coefficient of variation of whites data = standard deviation /mean *100 =(2.88/7.27)*100= 39.6 Coefficient of variation of Blacks data = standarddeviation / mean *100 =(2.40/7.90)*100= 30.4 blacks data has less variation So blacks data is the bestestimator. Coefficient of variation of Blacks data = standarddeviation / mean *100 =(2.40/7.90)*100= 30.4 blacks data has less variation So blacks data is the bestestimator.Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.