Interpreting time series graphs | Maths | Quizalize & Oak National Academy

Starter quiz

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

'time' ✓
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).

'Number of birds' ✓
A point on this axis has been labelled $p$ . The value of $p$ is ______.

'36' ✓
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 ______.

'April' ✓
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.

'60' ✓
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.

'10' ✓

Exit quiz

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

'horizontal' ✓
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?

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. Why is there an unusual dip in 2020?

Data will not always follow the same trend.

The pandemic started in 2020. ✓

There was a financial crash 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?

£20 000

£25 000

£30 000 ✓

£35 000
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?

£5000

£10 000 ✓

£15 000

£30 000

£40 000
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

'2016' ✓

Worksheet

Loading worksheet ...

Presentation

Loading presentation ...

Video

Lesson Details

Key learning points

The graph can be used to estimate a frequency at a given time
Time series graphs can help us spot underlying trends or systematic patterns
These trends can be interpreted in context and the context may explain the pattern seen

Common misconception

Pupils may place too much confidence in the accuracy of predictions based on extrapolating time series graphs into the future.

While extrapolating a time series graph provide an indication of what future results may be, predictions are not guaranteed. Context should also be considered in these cases (e.g. whether there is a natural limit to how high a variable may reach).

Keywords

Time series graphs - 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.