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Graphs and Data Visualization

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Graphs and Data Visualization

Use the data provided to interpret and plan graphs. Show calculations where needed, and include clear titles, labels and units on graphs you create.

Choosing and understanding graphs

1.A sanctuary records the weight of a rescued kākāpō at the same time each day for two weeks. Which graph would best show how its weight changes over time?

Line graph
Pie chart
Bar graph
Dot plot

2.Ruben surveys visitors about which sanctuary activity they prefer. Which graph is most suitable for comparing the numbers choosing each activity?

Bar graph
Line graph
Scatter plot
Number line

3.Which set lists the features needed for a clear graph showing a measured quantity over time?

A title, labelled axes with units, and correctly plotted points joined in time order
A title, unlabelled axes, and a separate sector for every measurement
A legend and pictures, but no scale
A labelled vertical axis and bars arranged by size

4.A pie chart represents all visitors' choices in one survey. What total percentage and angle do all its sectors represent?

100% and 360°
50% and 180°
100% and 180°
360% and 100°

5.Match each data task with the graph type that would usually display it most effectively.

Comparing the number of each native bird species seen on one morning
Showing daily rainfall measurements across a month
Showing how a single day's visitor survey divides into activity choices
Investigating whether animal age is associated with body mass

Pie chart
Bar graph
Scatter plot
Line graph

Interpreting sanctuary data

Day

Feed eaten (g)

Monday

Tuesday

Wednesday

Thursday

Friday

6.Using the kiwi feed-intake table, state the greatest daily intake and the day it was recorded.

7.Using the same table, calculate the range of the daily feed amounts.

8.Describe the overall pattern in the kiwi's feed intake from Monday to Friday. Support your description with a comparison from the data.

Preferred activity

Visitors

Guided bird walk

Animal care talk

Wetland walk

Behind-the-scenes tour

9.For the visitor survey, calculate the total number surveyed and the fraction who preferred the guided bird walk. Give the fraction in simplest form.

10.Which activity was selected by the fewest visitors, and how many visitors selected it?

11.Explain why a pie chart could communicate the visitor survey more effectively than a graph designed to show measurements changing over time.

Planning and creating graphs

12.Create a graph of the kiwi's daily feed intake from the table. Include a descriptive title, labelled axes with units, a suitable scale, accurately plotted points and connecting lines.

13.Plan a pie chart for the visitor survey. For each activity, calculate its fraction of all responses and its sector angle. Use 360° for the full circle.

14.Over three weeks, Anahera records the number of visitors who choose each of four sanctuary activities. Recommend a graph that would allow her to compare both activity preferences and changes between weeks. Explain how it could show the data.