Neco 2020 Data Processing Question 2

Practice essay / theory question 2 from the 2020 Neco Data Processing examination. This question covers Statistical measures, Frequency distribution, Data representation, Revenue calculation .

Neco 2020 Data Processing Essay / Theory
Topics: Statistical measures Frequency distribution Data representation Revenue calculation
Question 2 NECO • 2020 • DATA_PROCESSING • essay

The sales department of a small company recorded the number of units of Product X sold each month for the first half‑year of 2024. The unit sales are shown in the table below. The selling price per unit is ₦250. | Month | Units sold | |-------|------------| | Jan | 120 | | Feb | 150 | | Mar | 130 | | Apr | 160 | | May | 140 | | Jun | 180 | Using this information, answer the following questions.

Question Parts

( a )
Calculate the revenue earned in each month and the total revenue for the six‑month period.
( b )
Determine the following statistical measures for the unit‑sales data: (i) mean, (ii) median, (iii) mode (if any).
( c )
Construct a frequency distribution for the unit‑sales using the class intervals 100‑119, 120‑139, 140‑159, 160‑179, 180‑199. State which interval has the highest frequency.
( d )
Which type of graph – a bar chart or a line graph – would better represent the trend in monthly sales and why?

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About This Question

This is Neco 2020 Data Processing Question 2. It is one of the essay questions from the 2020 Neco Data Processing examination.

The question covers Statistical measures, Frequency distribution, Data representation, Revenue calculation .

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