It would be highly appreciate if someone can help me answer question b *it is a practice question and not an exam question thank you very much

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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It would be highly appreciate if someone can help me answer question b

*it is a practice question and not an exam question

thank you very much 

Table 1
shows the grouped data of the ages (rounded to the nearest years) of all
customers entered a shop for the past few weeks.
Table 1
Age (years)
1 to 10
11 to 20
Number of customers
16
10
21 to 30
20
31 to 40
22
41 to 50
18
(a)
Construct a 'less than' cumulative frequency distribution table for the above
data.
(b)
Draw a 'less than’ cumulative frequency curve for the above data. Hence,
estimate the percentage of the customers who are at least 28 years old.
(c)
Calculate the median and interpret the value.
(d)
Compute the variance for the above data.
Transcribed Image Text:Table 1 shows the grouped data of the ages (rounded to the nearest years) of all customers entered a shop for the past few weeks. Table 1 Age (years) 1 to 10 11 to 20 Number of customers 16 10 21 to 30 20 31 to 40 22 41 to 50 18 (a) Construct a 'less than' cumulative frequency distribution table for the above data. (b) Draw a 'less than’ cumulative frequency curve for the above data. Hence, estimate the percentage of the customers who are at least 28 years old. (c) Calculate the median and interpret the value. (d) Compute the variance for the above data.
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