CAIE IGCSE Mathematics Extended E9.7 Histograms

Covered syllabus points

E9.7.1 Draw and interpret histograms.E9.7.2 Calculate with frequency density

[Maximum number: 3]

A student measures the height, $h \mathrm{~cm}$ , of each of 400 plants.

The heights are also shown in the frequency table.

Table for Question 1 — CAIE IGCSE Mathematics Extended

Complete the histogram to show this information.

Figure for Question 1 — CAIE IGCSE Mathematics Extended

Correct histogram, correct widths and heights $8\text{ cm},12.4\text{ cm},1.9\text{ cm}$ .

B1 for each column.
If 0 scored, SC1 for frequency densities 8, 12.4, 1.9 seen.

[Maximum number: 2]

Some students record their reaction times.
The table shows the results.

On a histogram, the height of the block for the $0<t\leqslant6$ interval is 7.5 cm.
Calculate the height of the block for the $6<t\leqslant10$ interval.

Table for Question 2 — CAIE IGCSE Mathematics Extended

10
M1 for $\frac{7.5}{18/6}$ oe or better, or frequency densities 3 and 4, or 45 and 4h, or 45 and 40

[Maximum number: 2]

100 students solve a puzzle.
The table shows information about the time taken by each student to solve the puzzle.

Table for Question 3 — CAIE IGCSE Mathematics Extended

Complete the histogram to show the information in the table.

Figure for Question 3 — CAIE IGCSE Mathematics Extended

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CAIE IGCSE Mathematics Extended E9.7 Histograms Topic Practice

Covered syllabus points

Question 1

Question 2

Question 3