Representing data Quiz

1. In a survey of $45$ students, $9$ chose cycling. What angle represents cycling in a pie chart?

• A. $40^\circ$
• B. $72^\circ$
• C. $90^\circ$
• D. $9^\circ$

2. Which is the best representation of the temperature in a town each hour of one day?

• A. Pie chart
• B. Bar chart of colours
• C. Line graph
• D. Pictogram of sports

3. A frequency polygon is drawn for the class $20\leq x<30$. At what $x$ value is the point plotted?

• A. $25$
• B. $20$
• C. $30$
• D. $50$

4. Which feature makes a bar chart misleading?

• A. The bars have equal widths
• B. The axes are labelled
• C. The chart has a title
• D. The vertical axis starts well above zero

5. Hours of revision and test scores both go up together. What type of correlation is this?

• A. Negative correlation
• B. Positive correlation
• C. No correlation
• D. Proof that revision causes higher scores