# Worksheet: Relative Frequency Histogram

In this worksheet, we will practice drawing and interpreting frequency and relative frequency histograms.

**Q1: **

Walking has been shown to be beneficial not only to our heart and muscles but also to our brain by increasing its supply of blood. A survey has been conducted in a secondary school to find out how long students walk per week. The data can be represented with a relative frequency histogram. Which of the following correctly displays a relative frequency histogram?

- A
- B
- C
- D
- E

**Q2: **

The table shows some tangerinesβ weights in a supermarket and their relative frequencies.

Weight in Grams () | Frequency | Relative Frequency |
---|---|---|

1 | ||

0.15 | ||

9 | 0.225 | |

24 | 0.6 |

Find and .

- A,
- B,
- C,
- D,
- E,

**Q3: **

The table below shows the number of hours that 20 people spent exercising for one week.

Hours () | ||||||
---|---|---|---|---|---|---|

Frequency | 2 | 3 | 6 | 4 | 4 | 1 |

Which of the following correctly displays a relative frequency histogram?

- A
- B
- C
- D
- E

**Q4: **

The graph shows the relative frequencies of the heights of 200 people. From the graph, what is the relative frequency of the interval ?

- A0.2
- B0.5
- C0.4
- D0.3
- E0.1

**Q5: **

One day, a coffee shop recorded the first 100 drinks that were ordered as shown.

Time () | ||||||
---|---|---|---|---|---|---|

Frequency | 30 | 10 | 35 | 12 | 10 | 3 |

Find the relative frequency for each drink.

- A3, 1, 3.5, 1.2, 1, 0.3
- B0.3, 0.1, 0.35, 0.12, 0.1, 0.03
- C130, 110, 135, 112, 110, 103
- D30, 40, 75, 87, 97, 100
- E0.429, 0.143, 0.5, 0.171, 0.143, 0.043