The histogram shows information about the speed of cars as they pass a checkpoint.
The scale on the frequency density axis is missing.
The histogram shows information about 480 cars.
a) How many cars does the first bar represent?
Answers
the
bar represent 120 bars
Given : The histogram shows information about the speed of cars as they pa ss a checkpoint.
The scale on the frequency density axis is missing.
The histogram shows information about 480 cars.
To Find :
a) How many cars does the first bar represent?
Solution :
15 to 30 on x axis has , 24 on y axis
(30 - 15) * 24 = 360
30 to 35 on x axis has , 33 on y axis
(35 - 30) * 33 = 165
35 to 50 on x axis has , 5 on y axis
(50 - 35) * 5= 75
360 + 165 + 75 = 600
600 = 480
1 = 480/600
360 = 360 x 480/600 = 288
first bar represent = 288 Cars
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