What this quiz covers

Grade 8 Data Handling Quiz 3 draws its questions at random from 24 questions across these topics:

• Types of data
• Collecting data
• Tally marks
• Frequency tables
• The mode
• The median
• The mean
• The range
• Four measures
• Outliers
• Choosing a measure
• Working backwards
• Applying it

Example questions

A sample of the questions you will practise in this quiz. Work them out yourself - the full solution appears after you answer each one.

1. Which one of these data sets can you calculate a mean for?
2. Twenty learners named their favourite sport. Nine said soccer, which was more than any other. Which measure describes this data?
3. Why is "Is your family big?" a poor questionnaire question?
4. How is the number 5 recorded in tally marks?
5. In a frequency table the frequencies are 2, 6, 4, 2 and 1. The data set had 15 values. What does this tell you?