Data

Dee drew a line graph of her pulse rate (beats per minute) over time (minutes): 0 to 66, 10 to 102, 20 to 102, 30 to 118, 40 to 106, 50 to 130, 60 to 130, 70 to 88, 80 to 68. At what time was her pulse rate 118 beats per minute?

On Dee's line graph her pulse rate was 106 at 40 minutes and 130 at 50 minutes. Between 40 and 50 minutes, what happened to her pulse rate?

1. AIt increased
2. BIt decreased
3. CIt stayed the same

Dee's pulse line graph reads 102 beats per minute at 10 minutes and 102 beats per minute at 20 minutes. So her pulse rate was the same at 10 minutes and 20 minutes.

A frequency diagram shows vehicle speeds: 20-40 km/h (6 vehicles), 40-60 km/h (12), 60-80 km/h (8), 80-100 km/h (4). How many vehicles were travelling 60 or more km/h but less than 80 km/h?

A frequency diagram shows vehicle speeds: 20-40 km/h (6), 40-60 km/h (12), 60-80 km/h (8), 80-100 km/h (4). How many vehicles passed the school in total?

A measurement on a group boundary is recorded in the group above. On a travel-time frequency diagram, which group does a travel time of exactly 30 minutes go into?

1. A20 to 30 minutes
2. B30 to 40 minutes
3. C10 to 20 minutes

A class measured how high they could jump. The tallest jump recorded was 36 cm and the shortest was 18 cm. What was the highest jump, in centimetres?

A scatter graph of plant height (cm) against number of leaves has the point (18, 9). How many leaves does the 18 cm plant have?

A scatter graph of plant height against number of leaves has these leaf counts: 2, 4, 7, 3, 6, 8, 8, 9, 4, 6, 6. What is the greatest number of leaves on any plant?

A scatter graph is used to find out whether there might be a link between two sets of data.

Once you have drawn a line of best fit on a scatter graph, what can you use it for?

1. ATo estimate a value that was not measured
2. BTo count how many items there are
3. CTo show change over time

You want to investigate how quickly hot water cools to room temperature. Which graph should you use?

1. AA line graph
2. BA frequency diagram
3. CA scatter graph

Cheng recorded the temperature of a thermometer every half hour through the day and joined the points. What kind of graph is this?

1. AA line graph
2. BA pie chart
3. CA dot plot

A frequency diagram shows vehicle speeds: 20-40 km/h (6 vehicles), 40-60 km/h (12), 60-80 km/h (8), 80-100 km/h (4). Put the speed groups in order from least common to most common.

A tally shows 5 groups of 5 and 1 more mark. What is the total?

A survey recorded these counts: 20, 2, 13. How many were counted in total?

One bar shows 16 and another shows 3. How many more does the first show?

A survey recorded these counts: 1, 9, 1, 6. How many were counted in total?

One bar shows 15 and another shows 11. How many more does the first show?

One bar shows 14 and another shows 9. How many more does the first show?