A statistical summary sums up the features of a data set.

Statistical summaries using technology

Maths

Checking understanding of summary statistics from a list

Checking understanding of summary statistics from a frequency table

Calculating summary statistics from a grouped frequency table

Calculating the mean from a grouped frequency table

Weighted means

Constructing stem and leaf diagrams

Calculating summary statistics from stem and leaf diagrams

Checking understanding of measures of central tendency

Comparing data sets in context

Comparing various representations of data sets

Problem solving with comparisons of numerical data

In this unit, pupils began to compare two different sets of data. In the future unit, pupils will consider cumulative frequency graphs and histograms and compare the data from these diagrams to other graphical representations.

In the prior unit, pupils considered the mean, median and mode and evaluated their usefulness in a variety of contexts. In this unit, pupils extend this learning to comparing two different data sets and comparing these measures of central tendency.

In this unit pupils will compare two different data sets and compare different measures of central tendancy when interpreting the data. Pupils will learn to interrogate frequency tables and stem and leaf diagrams both with and without technology.

Comparisons of numerical summaries of data

A __________ sums up the features of a data set. 

When using spreadsheet software, which command would calculate the mean for a column of numerical data?

When using spreadsheet software, which command would calculate the range for a column of numerical data?

When using spreadsheet software, which command would calculate the median for a column of numerical data?

When using spreadsheet software, what symbol represents multiplication?

When using spreadsheet software, what symbol represents division?

A __________ is a circular graph where sectors represent different groups proportionally.

Find the mode of the following numbers: 15, 13, 20, 15, 17, 16.

Find the median of the following numbers: 15, 13, 20, 15, 17, 16.

Find the range of the following numbers: 15, 13, 20, 15, 17, 16.

Find the mean of the following numbers: 15, 13, 20, 15, 17, 16.

An estimate for the mean of the data presented in the table is {{ }} kilograms.

Starter Quiz

A __________ is a circular graph where sectors represent different groups proportionally.