Researchers report the survival times for patients with active hepatitis, half treated with prednisone and half receiving no treatment. The data that follow are adapted from their data for those treated with prednisone. The survival times are recorded to the nearest mont 9 12 O 53 58 66 86 94 98 110 128 132 150 140 149 145 158 163 121 146 164 (a) Look at the data. Can you guess the approximate shape of the data distribution? O There are a few large numbers, indicating that the distribution is probably skewed to the right. O There are a few small numbers, indicating that the distribution is probably skewed to the left. O There are a few large numbers, indicating that the distribution is probably skewed to the left. O There are no outliers, indicating that the distribution is probably mound-shaped. O There are a few small numbers, indicating that the distribution is probably skewed to the right. (b) Construct a relative frequency histogram for the data. Relative Frequency 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 25 50 75 100 125 150 175 What is the shape of the distribution? O The distribution is skewed right. O The distribution is symmetric. O The distribution is skewed left. Times OTwo possible outliers are 9 and 12. O There are no outliers. OTwo possible outliers are 163 and 164. O Three possible outliers are 9, 66, and 86. Relative Frequency 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00 (c) Are there any outliers in the set? If so, which survival times are unusually short? O One possible outlier is 164. Times 0 25 50 75 100 125 150 175 Relative Frequency 0.25 0.20 0.15 0.10 0.05 0.00 0 25 Times 50 75 100 125 150 175 Relative Frequency 0.25 L 0.20 0.15 0.10 0.05 DO 0.00 0 Times 25 50 75 100 125 150 175 +
Researchers report the survival times for patients with active hepatitis, half treated with prednisone and half receiving no treatment. The data that follow are adapted from their data for those treated with prednisone. The survival times are recorded to the nearest mont 9 12 O 53 58 66 86 94 98 110 128 132 150 140 149 145 158 163 121 146 164 (a) Look at the data. Can you guess the approximate shape of the data distribution? O There are a few large numbers, indicating that the distribution is probably skewed to the right. O There are a few small numbers, indicating that the distribution is probably skewed to the left. O There are a few large numbers, indicating that the distribution is probably skewed to the left. O There are no outliers, indicating that the distribution is probably mound-shaped. O There are a few small numbers, indicating that the distribution is probably skewed to the right. (b) Construct a relative frequency histogram for the data. Relative Frequency 0.30 0.25 0.20 0.15 0.10 0.05 0.00 0 25 50 75 100 125 150 175 What is the shape of the distribution? O The distribution is skewed right. O The distribution is symmetric. O The distribution is skewed left. Times OTwo possible outliers are 9 and 12. O There are no outliers. OTwo possible outliers are 163 and 164. O Three possible outliers are 9, 66, and 86. Relative Frequency 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.00 (c) Are there any outliers in the set? If so, which survival times are unusually short? O One possible outlier is 164. Times 0 25 50 75 100 125 150 175 Relative Frequency 0.25 0.20 0.15 0.10 0.05 0.00 0 25 Times 50 75 100 125 150 175 Relative Frequency 0.25 L 0.20 0.15 0.10 0.05 DO 0.00 0 Times 25 50 75 100 125 150 175 +
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Researchers report the survival times for patients with active hepatitis, half treated with prednisone and half receiving no treatment. The data that follow are adapted from their data for those treated with prednisone. The survival times are recorded to the nearest month.
9
12
53
58
66
86
94
98
110
121
128
132
140
145
146
149
150
158
163
164
(a) Look at the data. Can you guess the approximate shape of the data distribution?
There are a few large numbers, indicating that the distribution is probably skewed to the right.
O There are a few small numbers, indicating that the distribution is probably skewed to the left.
There are a few large numbers, indicating that the distribution is probably skewed to the left.
There are no outliers, indicating that the distribution is probably mound-shaped.
O There are a few small numbers, indicating that the distribution is probably skewed to the right.
(b) Construct a relative frequency histogram for the data.
Relative
Frequency
0.30
0.25
0.20
0.15
0.10
0.05
0.00
0 25 50 75 100 125 150 175
What is the shape of the distribution?
The distribution is skewed right.
The distribution is symmetric.
The distribution is skewed left.
Times
Relative
Frequency
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
0 25 50 75
(c) Are there any outliers in the set? If so, which survival times are unusually short?
One possible outlier is 164.
Two possible outliers are 9 and 12.
There are no outliers.
Two possible outliers are 163 and 164.
O Three possible outliers are 9, 66, and 86.
100 125 150 175
Times
Relative
Frequency
0.25
0.20
0.15
0.10
0.05
0.00
0 25
50
75
100 125 150 175
Times
Relative
Frequency
0.25
0.20
0.15
0.10
0.05
0.00
0
25
50 75 100 125 150 175
Times
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