NBT Quantitative Literacy: Charts, Tables and Graphs Flashcards

A cumulative frequency table shows that 48 out of 80 learners scored below 60%. What percentage scored 60% or above?

Answer: 40%

Scored 60% or above = 80 − 48 = 32; percentage = 32/80 × 100% = 40%.

A broken-line graph shows stock prices. The graph has a gap (break) in the y-axis starting from 0. This is likely intended to:

Answer: Emphasise small differences between prices

Breaking the y-axis allows small differences to look more dramatic by zooming in on the relevant range.

A table shows that a machine produces 45 items per hour. How many hours does it take to produce 630 items?

Answer: 14 hours

Time = 630 ÷ 45 = 14 hours.

A bar chart compares male and female voter turnout across three provinces. Province B shows the greatest gap between male and female turnout. This means:

Answer: The difference between male and female turnout is largest in Province B

The largest gap between the two bars in Province B means male and female turnout differ the most there.

A pie chart has 6 equal sectors. Each sector represents:

Answer: 60°

360° ÷ 6 = 60° per sector.

A table shows meal prices at a restaurant. A student buys 2 mains at R85 each and 1 dessert at R45. What is the total, including a 10% tip?

Answer: R236.50

Subtotal = R85 × 2 + R45 = R215; 10% tip = R21.50; total = R215 + R21.50 = R236.50.

A line graph shows temperature (°C) over 24 hours. The temperature is highest at 14:00 and lowest at 05:00. This is an example of what kind of pattern?

Answer: Diurnal (daily) cycle

A regular pattern of highs and lows within a 24-hour period is called a diurnal (daily) cycle.