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2.2.1 Single-variable data diagrams

Question 3

A variable $y\,$ was measured to the nearest whole number. The 40 observations are summarised in the table below.

$y$	10–19	20–24	25–28	29–30
Frequency	13	7	15	5

A histogram is drawn. On the histogram, the bar representing the class 10–19 has a width of 2.5 cm and a height of 2.6 cm.

Find the width and the height of the bar representing the class 20–24.

[3]

Find the width and the height of the bar representing the class 25–28.

[3]

Markscheme

2.2.1 Single-variable data diagrams Questions

A Level
Maths
2.2.1 Single-variable data diagrams

8 exam-style questions on AQA A Level Maths 2.2.1 Single-variable data diagrams. Each one has a worked solution and a mark scheme showing where the marks go.

2.2.1 Single-variable data diagrams

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2.2.1 Single-variable data diagrams

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Question 3

A variable $y\,$ was measured to the nearest whole number. The 40 observations are summarised in the table below.

$y$	10–19	20–24	25–28	29–30
Frequency	13	7	15	5

A histogram is drawn. On the histogram, the bar representing the class 10–19 has a width of 2.5 cm and a height of 2.6 cm.

Find the width and the height of the bar representing the class 20–24.

[3]

Find the width and the height of the bar representing the class 25–28.

[3]

Markscheme

2.2.1 Single-variable data diagrams Questions

A Level
Maths
2.2.1 Single-variable data diagrams

8 exam-style questions on AQA A Level Maths 2.2.1 Single-variable data diagrams. Each one has a worked solution and a mark scheme showing where the marks go.