Statistical Representations

The dot diagram shows the number of pushups a student can do in a minute.

Find the percentage of students who can do 31 pushups or less?

• 2%

• 13.4%

• 14.3%

• 33.3%

What angle would you use to represent 40 red cars out of 90 cars in total on a pie chart?

• 40 degrees

• 160 degrees

• 170 degrees

• 44 degrees

In total, how many students took part in the survey?

Find the number of students who prefer purple over red as a percentage of the total number of students.

• 41.7%

• 9.26%

• 31.5%

• 22.2%

Consider the three representations of a data set: the dot plot, the box plot, and the histogram. Which representation do you think is the most useful for observing the overall shape and spread of the data set? Match the explanations to each type of graph.

• Histograms are useful because ...

• specific data points can be identified and the mean and median can be calculated.

• Dot Plots are useful because ...

• quartiles, median, IQR and range can be easily identified.

• Box Plots are useful because ...

• data points are grouped together in a more readable way, especially for large data sets.

Consider the three representations of a data set: the dot plot, the box plot, and the histogram. Which representation do you think is the most useful for observing the overall shape and spread of the data set? Match the explanations to each type of graph.

• Box Plots are useful because ...

• quartiles, median, IQR and range can be easily identified.

• Dot Plots are useful because ...

• data points are grouped together in a more readable way, especially for large data sets.

• Histograms are useful because ...

• specific data points can be identified and the mean and median can be calculated.

Determine the method of the data.

• Dot plot

• Scatter plot

• Histogram

• Box & whisker plot

Which stem-n-leaf plot shows the same data as the histogram?

• 
• 
• 

Best statistical representation to present:

Number of colour marbles (green, blue, orange) in a box

• bar chart

• line graph

The trend of students Science scores in Year 7

• Pie Chart

• Line Graph

• Bar Graph

• Dot Diagram

• Pictogram