vii.) Estimate the mean of the data viii.) Draw a cumulative frequency diagram to illustrate the data

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question
Solve last 2 parts
F
5a
The table shows the amount of time it takes a group of
customers to be served in a post office.
Wait time x
Frequency
Cumulative
frequency
(minutes)
0 ≤ x ≤ 10
3
10< x < 20
5
< 30
9
< 40
11
< 50
8
< 60
4
Is the data collected discrete or continuous?
Is it qualitative or quantitative? Explain why
Complete the cumulative frequency column on the
table
Calculate the lower quartile of the data using the
formula
L+(Q-P)
Lower Quartile =
XC
F
Calculate the upper quartile of the data using the
formula
Upper Quartile =
L+(Q-P)
F
xC
vi.) Calculate the interquartile range Using the formula
Interquartile range
= upper quartile lower quartile
vii.) Estimate the mean of the data
viii.)
Draw a cumulative frequency diagram to illustrate
the data
20 ≤ x
30 ≤ x
40 < x
50 ≤ x
i.)
ii.)
iii.)
iv.)
v.)
Transcribed Image Text:F 5a The table shows the amount of time it takes a group of customers to be served in a post office. Wait time x Frequency Cumulative frequency (minutes) 0 ≤ x ≤ 10 3 10< x < 20 5 < 30 9 < 40 11 < 50 8 < 60 4 Is the data collected discrete or continuous? Is it qualitative or quantitative? Explain why Complete the cumulative frequency column on the table Calculate the lower quartile of the data using the formula L+(Q-P) Lower Quartile = XC F Calculate the upper quartile of the data using the formula Upper Quartile = L+(Q-P) F xC vi.) Calculate the interquartile range Using the formula Interquartile range = upper quartile lower quartile vii.) Estimate the mean of the data viii.) Draw a cumulative frequency diagram to illustrate the data 20 ≤ x 30 ≤ x 40 < x 50 ≤ x i.) ii.) iii.) iv.) v.)
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