3.4 Histograms

Question 1

The partially completed histogram and the partially completed table show the times taken, to the nearest second, for a group of people to complete a puzzle.

A partially completed histogram showing Frequency Density on the y-axis and Time (s) on the x-axis. The x-axis ranges from 0 to 20 with major grid lines every 2 units and minor grid lines every 1 unit. There are two shaded bars: one from 5 to 8 seconds with a height of 12, and another from 11 to 15 seconds with a height of 8. The y-axis is labeled 'Frequency Density' and has no numerical scale.

Time (seconds)	Frequency
1–4	2
5–8	12
9–10	8
11–15
16–20	3

a.

Complete the table.

[1]

b.

Complete the histogram.

[2]

c.

One of the participants is selected at random.

Estimate the probability that this participant completed the puzzle in under 10 seconds.

[2]

3.4 Histograms

1 2 3 4

Question 1

The partially completed histogram and the partially completed table show the times taken, to the nearest second, for a group of people to complete a puzzle.

A partially completed histogram showing Frequency Density on the y-axis and Time (s) on the x-axis. The x-axis ranges from 0 to 20 with major grid lines every 2 units and minor grid lines every 1 unit. There are two shaded bars: one from 5 to 8 seconds with a height of 12, and another from 11 to 15 seconds with a height of 8. The y-axis is labeled 'Frequency Density' and has no numerical scale.

Time (seconds)	Frequency
1–4	2
5–8	12
9–10	8
11–15
16–20	3

a.

Complete the table.

[1]

b.

Complete the histogram.

[2]

c.

One of the participants is selected at random.

Estimate the probability that this participant completed the puzzle in under 10 seconds.

[2]

3.4 Histograms

Question 1

Markscheme

3.4 Histograms

Question 1

Markscheme

3.4 Histograms

Question 1

3.4 Histograms Questions

3.4 Histograms

Question 1

3.4 Histograms Questions