**Question 2**:

Diagram 2 shows the histogram of the data of mass for 30 students in a school. The heights of the students are 1.55 m.

**Diagram 2**

**(a)(i)**State the number of students which have mass range of 71 kg to 80 kg. [1 mark]

**(ii)**State one reason that causes the students in 2(a)(i) fall in that range? [1 mark]

**(b)**What is the type of variation shown by the graph in Diagram 2? [1 mark]

**(c)**State

**two**characteristics of the type of variation based on your answer in 2(b). [2 marks]

**Answer**:

**(a)(i)**5

**(a)(ii)**Their mass is the highest and they are obese.

**(b)**Continuous variation

**(c)**

– Characteristics that do not show distinct differences in each group

– Characteristics that can be measured across a complete range