The amount of caffeine in a sample of five-ounce servings of brewed coffee is shown in the histogram. Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. W Click the icon to view the histogram.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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The amount of caffeine in a sample of five-ounce servings of brewed coffee is shown in the histogram. Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample
standard deviation of the data set.
Click the icon to view the histogram.
Graph/chart
Midpoint x
xt
Ay
30+
2
70.5
141
24
14
92.5
1295
25-
24
114.5
2748
20-
7
136.5
955.5
14
15-
3
158.5
475.5
10-
7
ΣΤ- 50
Exf = 5615
5-
Find the mean of the data set.
48.5 70.5
92.5 114.5 136.5 158.5
x = 112.3 (Round to the nearest tenth as needed.)
Complete the table. Round values to the nearest tenth as needed.
Midpoint x
(x-x)?
(x-x)?f
Print
Done
X-X
70.5
- 41.8
1747.2
3494.5
92.5
1295
85556.3
119787.5
Transcribed Image Text:The amount of caffeine in a sample of five-ounce servings of brewed coffee is shown in the histogram. Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. Click the icon to view the histogram. Graph/chart Midpoint x xt Ay 30+ 2 70.5 141 24 14 92.5 1295 25- 24 114.5 2748 20- 7 136.5 955.5 14 15- 3 158.5 475.5 10- 7 ΣΤ- 50 Exf = 5615 5- Find the mean of the data set. 48.5 70.5 92.5 114.5 136.5 158.5 x = 112.3 (Round to the nearest tenth as needed.) Complete the table. Round values to the nearest tenth as needed. Midpoint x (x-x)? (x-x)?f Print Done X-X 70.5 - 41.8 1747.2 3494.5 92.5 1295 85556.3 119787.5
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