62. Americans Dining Out. Americans tend to dine out multiple times per week. The num- ber of times a sample of 20 families dined out last week provides the following data. 30 31 3 61 5 3 7 4 1 24 4105631 a. Compute the mean and median. b. Compute the first and third quartiles. c. Compute the range and interquartile range. d. Compute the variance and standard deviation. e. The skewness measure for these data is .34. Comment on the shape of this distribu- tion. Is it the shape you would expect? Why or why not? f. Do the data contain outliers?
62. Americans Dining Out. Americans tend to dine out multiple times per week. The num- ber of times a sample of 20 families dined out last week provides the following data. 30 31 3 61 5 3 7 4 1 24 4105631 a. Compute the mean and median. b. Compute the first and third quartiles. c. Compute the range and interquartile range. d. Compute the variance and standard deviation. e. The skewness measure for these data is .34. Comment on the shape of this distribu- tion. Is it the shape you would expect? Why or why not? f. Do the data contain outliers?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
100%
need help solution for 62 a, b, c, d, e, and f
Transcribed Image Text:Chapter 3 Descriptive Statistics: Numerical Measures
Standard Deviation
Coefficient of Variation
z-Score
Sample Covariance
Sample standard deviations-V
Population standard deviation - Vo
Population Covariance
Standard deviation
Mean
sy
M
2₁ =
Σ(x,-)(y₁ - y)
n-1
Σ(x,- p.)(y₁ - Py)
N
Pearson Product Moment Correlation Coefficient: Sample Data
ray
x 100%
Pxy
لله
Pearson Product Moment Correlation Coefficient: Population Data
=
ory
0,0,
(3.16)
(3.12)
(3.13)
(3.14)
(3.15)
(3.16)
SUPPLEMENTARY EXERCISES
62. Americans Dining Out. Americans tend to dine out multiple times per week. The num-
ber of times a sample of 20 families dined out last week provides the following data.
6 1 5 3 7 3 0 3 1 3
5 6 3 1
4
1 2
410
a. Compute the mean and median.
b. Compute the first and third quartiles.
c. Compute the range and interquartile range.
d. Compute the variance and standard deviation.
e. The skewness measure for these data is .34. Comment on the shape of this distribu-
tion. Is it the shape you would expect? Why or why not?
f. Do the data contain outliers?
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