The table below contains data about the cost of electricity during a recent mont
ID: 3043020 • Letter: T
Question
The table below contains data about the cost of electricity during a recent month for a random sample of
3030
one-bedroom apartments in a large city. Complete parts (a) through (c) below.
9797
160160
144144
9393
110110
170170
186186
146146
160160
122122
206206
9090
206206
149149
185185
176176
116116
173173
156156
148148
146146
175175
125125
129129
112112
101101
110110
125125
143143
138138
a. Construct a frequency distribution and a percentage distribution that have class intervals with the upper class boundaries $99, $119, and so on.
Construct a frequency distribution.
Cost ($)
Frequency
8080
but less than
100100
nothing
100100
but less than
120120
nothing
120120
but less than
140140
nothing
140140
but less than
160160
nothing
160160
but less than
180180
nothing
180180
but less than
200200
nothing
200200
but less than
220220
nothing
9797
160160
144144
9393
110110
170170
186186
146146
160160
122122
206206
9090
206206
149149
185185
176176
116116
173173
156156
148148
146146
175175
125125
129129
112112
101101
110110
125125
143143
138138
Explanation / Answer
below is percentage distribution by dividing each frequency by 30:
cost frequency 80-100 3 100-120 5 120-140 5 140-160 7 160-180 6 180-200 2 200-220 2Related Questions
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