Time series graphs show data over a time period. The time period is always shown on the x-axis. Data points are joined chronologically by line segments.

Interpreting time series graphs

Maths

Checking understanding of scatter graphs

Checking understanding of correlation

Estimating from scatter graphs

Interpolation versus extrapolation

Outliers in scatter graphs

Constructing time series graphs

Problem solving with scatter graphs and time series

In the prior unit, pupils explored different graphs and charts as a way of presenting data visually. Pupils were introduced to scatter graphs and learnt how to construct them. In this unit, this understanding is extended to using a line of best fit to allow interpolation.

In this unit pupils will learn how to interpret and extract data from scatter graphs and time series graphs.

Graphical representations of data: scatter graphs and time series

A time series graph shows data over a time period. The time period is always shown on the {{ }} axis.

The retail value is slightly decreasing each year

The retail value is consistent each year.

The retail value is slightly increasing each year.

This time series graph is based on data from the ONS about the amount of money spent each week on retail in the UK. Which of these best describes the overall trend?

Data will not always follow the same trend.

This time series graph is based on data from the ONS about the amount of money spent each week on retail in the UK. Why is there an unusual dip in 2020?

The time series below shows data from the ONS about the average annual income per person each year. What is the approximate mean income in the year 2000?

The time series below shows data from the ONS about the average annual income per person each year. What is the approximate greatest difference between the mean and median incomes?

The time series graph shows data on average houses prices over a number of years in the UK. In the year {{ }} the average house prices rose above £200 000

A time series graph is used to show data over a {{}} period.

Izzy records how many birds appear in her garden over the course of a day. Here is her time-series graph. Izzy should label the vertical axis {{ }}. (Do not include units in your answer).

A point on this axis has been labelled $$p$$. The value of $$p$$ is {{ }}.

Jun plots a time series graph using time intervals that are regular and quarterly. The first month on his graph is January, the next quarter starts with the month of {{ }}.

The time-series graph shows information about internet connection in Great Britain in households with 1 adult aged over 65. In 2018, approximately {{ }} % of households have internet access.

The time series graph to show the temperatures in Sheffield between 2012 and 2019. In how many quarters does the mean maximum temperature reach less than 10°C ? {{ }} quarters.

Interpreting time series graphs

Lesson outcome