Statistics

NZ Level 3

Create and interpret dot plots

A teacher made the following dot plot for the number of students in the class who had a dog and the number of students who had a cat.

a

How many students in the class have cats?

b

How many more students own cats than dogs?

c

How many students are there altogether in the class who own either a cat or a dog?

Easy

Less than a minute

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Conduct investigations using the statistical enquiry cycle: – gathering, sorting, and displaying multivariate category and wholenumber data and simple time-series data to answer questions;– identifying patterns and trends in context, within and between data sets; – communicating findings, using data displays

Evaluate the effectiveness of different displays in representing the findings of a statistical investigation or probability activity undertaken by others.