Neco 2025 Data Processing Question 1

Practice essay / theory question 1 from the 2025 Neco Data Processing examination. This question covers Data Processing, Statistics, Frequency Distribution, Measures of Central Tendency .

Neco 2025 Data Processing Essay / Theory

Topics: Data Processing Statistics Frequency Distribution Measures of Central Tendency

Question 1 NECO • 2025 • DATA_PROCESSING • essay

A class of 20 students sat for a mathematics test. Their scores (out of 100) are: 45, 52, 58, 61, 63, 65, 68, 70, 71, 73, 74, 76, 78, 80, 82, 84, 86, 88, 90, 95.

Question Parts

( a )

Construct a grouped frequency distribution for the scores using class intervals of 10 (i.e., 40‑49, 50‑59, …, 90‑99).

( b )

Using the distribution obtained in (a), calculate the mean, median, modal class and range of the scores.

( c )

Comment on the shape of the distribution by comparing the mean and median. State whether the distribution is approximately symmetric, positively skewed or negatively skewed.

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About This Question

This is Neco 2025 Data Processing Question 1. It is one of the essay questions from the 2025 Neco Data Processing examination.

The question covers Data Processing, Statistics, Frequency Distribution, Measures of Central Tendency .

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