Data collection and Presentation.

Mathematics for Js1 3rd Term.

Theme: Mensuration and Geometry

Week 10.

Data collection and Presentation.

Performance Objectives:

Students should be able to

1. Collect data in the class.

2. Determine the median of a given set of data.

Content.

Example 1:

The ages in years of nineteen pupils in Js1 of a school are as follows:

15,14,13,15,13,14,12,15,13,15,13,12,14,12,13,14,14,12,15.

a) How many pupils are aged 12 years?

b) How many pupils are aged 13 years?

c) How many pupils are aged 14 years?

d) How many pupils are aged 13 years and below?

e) How many pupils are aged over 12 years?

Answer.

a)4.                b)5

c)5.                  d)9.        e)15.

Example 2:

A die was tossed twenty times, and the number of times each…