A pictogram (pictograph) is a graph consisting of pictures to visually represent the frequency of objects or groups.

A bar chart (bar graph) is a graph consisting of bars visually representing the frequency of objects or groups.

A visual representation for bivariate data. It can be useful when determining the nature of the relationship between two variables

A bar chart (bar graph) is a graph consisting of bars visually representing the frequency of objects or groups

Statistical problems - data presentations

Maths

Checking understanding of the mean

Calculating the mean

Understanding the median

Calculating the median

Understanding the mode

Calculating the mode

Understanding and calculating the range

Summarising data

Changing a data point

Evaluating the range

Comparing statistical representations

Comparing summaries of data

Analysing different statistical representations

Correlation

Statistical problems - data collection

Statistical problems - statistical summaries

Statistical problems - drawing conclusions

Problem solving with numerical summaries of data

In this unit, pupils consider the mean, median and mode and evaluate their usefulness in a variety of contexts. In the sampling unit, pupils are given the opportunity to consider where the data came from and how it was collected and can therefore start to evaluate how good a representation the sample is of the whole population.

In this unit, pupils learnt how to calculate the mean and began to use the mean to make comparisons between two sets of data. Pupils also considered whether the mean was an appropriate way of representing the data 

In this unit pupils explore the concept of measures of central tendancy, developing understanding of different types of average and their relative benefits and drawbacks. We then investigate other summaries of data such as the range and data comparison techniques.

Numerical summaries of data

Which type of graph would be the most appropriate for showing correlation between bivariate data?

Which type of graph visually illustrates the context of the data as well as the frequencies?

Which type of graph would be the most appropriate for showing how a single variable has changed over time?

True or false: the scale on scatter graphs always needs to start at zero.

Which type of graph would be inappropriate for representing the data in the table?

labels on the horizontal axis for the bars

Which elements are missing from this bar chart?

represents frequencies with contextual images and a key

circular graph representing different groups proportionally

represents bivariate data as coordinates on a grid

What type of correlation does the scatter graph show?

How many giraffes are represented in the pictogram? {{ }} giraffes

The frequency of mashed potato is greater in Location 4 than Location 5.

The proportion of mashed potato is greater in Location 4 than Location 5.

The amount of boiled potato served is the same in both locations

The pie charts show the types of potato served by school canteens in two locations. Which statement is always true for the data represented in the pie charts?

Which place had the same number of visitors on both Saturday and Sunday?

This line graph shows data about journey times to work over a week. The median journey time is {{ }} minutes.

Statistical problems - data presentations

Lesson outcome