Neco 2024 Data Processing Question 2

Practice essay / theory question 2 from the 2024 Neco Data Processing examination. This question covers Descriptive statistics, Grouped frequency distribution, Estimation of mean, Choice of central tendency measure .

Neco 2024 Data Processing Essay / Theory

Topics: Descriptive statistics Grouped frequency distribution Estimation of mean Choice of central tendency measure

Question 2 NECO • 2024 • DATA_PROCESSING • essay

A small retail shop recorded the number of units sold each week for eight consecutive weeks. The data are: 23, 27, 31, 22, 35, 28, 30, 24 Using this data, answer the following:

Question Parts

( a )

Calculate the mean, median, mode and range of the weekly sales.

( b )

Construct a grouped frequency distribution with class intervals of width 5 units, starting from 20. Include a column for cumulative frequency.

( c )

Using the grouped data, estimate the mean weekly sales by assuming each observation lies at the class midpoint.

( d )

Discuss which measure of central tendency (mean, median or mode) is most appropriate for summarising this data and justify your choice.

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About This Question

This is Neco 2024 Data Processing Question 2. It is one of the essay questions from the 2024 Neco Data Processing examination.

The question covers Descriptive statistics, Grouped frequency distribution, Estimation of mean, Choice of central tendency measure .

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