determine the modal daily consumption of water
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Using the sample data in Table 1 above, determine the modal daily consumption of water.
A 246.1l
B 233.5l
C 224.9l
D 235.0l

Transcribed Image Text:As part of a pilot study aimed at determining the daily consumption of water (in litres) across selected suburbs of
Johannesburg, Johannesburg Water SOC Ltd (JW), a municipal entity, collected the sample data shown in Table 1 below.
Cumulative frequency
Class (L)
100 < 150
150 < 200
200 < 250
250 < 300
300 < 350
350 < 400
Total
Frequency, f Midpoint, m
40
125
W
175
130
225
275
325
375
X
75
35
Σf
fm
5 000
17 850
29 250
Y
24 375
13 125
Σfm
fm²
625 000
3 123 750
6 581 250
Z
7 921 875
4 921 875
Σfm²
40
?
272
?
465
500
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