On Friday night, the owner of Chez Pierre in downtown Chicago noted the amount s
ID: 2929782 • Letter: O
Question
On Friday night, the owner of Chez Pierre in downtown Chicago noted the amount spent for dinner for 28 four-person tables.
115
123
129
190
134
133
127
144
125
100
124
104
196
135
89
115
154
128
81
180
148
88
115
81
170
72
107
156
(a)
Find the mean, median, and mode. (Round your answers to 2 decimal places.)
Descriptive
Statistics
Data
Count
Mean
Median
Mode
(b)
Are the data symmetric or skewed? If skewed, which direction?
Symmetric
Skewed right
Skewed left
On Friday night, the owner of Chez Pierre in downtown Chicago noted the amount spent for dinner for 28 four-person tables.
Explanation / Answer
115,123,129,190,134,133,127,144,125,100,124,104,196,135,89,115,154,128,81,180,148,88,115,81,170,72,107,156.
(a) Count = 28.
Mean = (115 + 123 + 129 + 190 + 134 + 133 + 127 + 144 + 125 + 100 + 124 + 104 + 196 + 135 + 89 + 115 + 154 + 128 + 81 + 180 + 148 + 88 + 115 + 81 + 170 + 72 + 107 + 156) / 28
= 127.25.
Median is the middle value.
Sorting the data
Median is the middle value = mean of 14th and 15th values = (125 + 127) / 2 = 126.
Mode is the most repeating value = 115.
(b)The mean and the median are nearly equal. Mode is to the left of the mean.
Also the values to the right of the mean and median are dispersed more.
The data is skewed right.
115,123,129,190,134,133,127,144,125,100,124,104,196,135,89,115,154,128,81,180,148,88,115,81,170,72,107,156.
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