Virtual Textbook Resource
Resource description
Calculating mean median mode and range from a list of data
Calculate mean and range from a discrete and grouped frequency table
Calculate moving averages from a list. Time series graph drawn to comment on.
Without warning show pupils the screen with the rabbits for about 30 seconds. Hide the screen and ask them to write down how many rabbits they thought they saw. Use the second sheet to record the guesses and calculate the averages. Compare boys and girls guesses. Then give pupils warning and repeat this process. Ask pupils to predict what will happen to the averages and range on the second attempt.
Single box plot where the numbers can be changed. 2 box plots to use for comparing. Calculating information from a list of data to be able to draw a box plot.
Cumulative frequency
Empty table to input data and the cumulative frequency curve will be drawn. Cumulative frequency questions, renewed at the click of a button. Single and double box plots used to compare data.
Bar Charts
Tally table for discrete data. Scroll right and the bar chart will be displayed. Can be used for questioning and discussion. Also grouped data with class intervals written in two different ways.
Frequency Polygons
Frequency polygons drawn for discrete and continuous data and comparing two data sets. Hide the graph and ask pupils to draw the frequency polygons.
Scattergraph
Scattergraph to compare height with handspan. Input data and the points will be plotted. Comparing TV programmes scattergraph. Ask pupils to individually rank their favourite TV programmes from 1 to 10. Pair them up and then plot Pupil A against Pupil B. Interesting if teacher compares with a pupil.
Pie Charts
Pie chart example and questions. Able to reverse the questions so pupils must either calculate the angle or calculate the frequency.
Probability
Tally table to record results of rolling a dice 60 times. Simple fractional probability. Not probability with fractions and decimals. Calculate expected number of times an event will happen using fractions and decimals. Place 10 cubes in a bag, some red and some white. Remove a cube 10 times and record in a table. Ask pupils to use the information to guess how many red cubes are in the bag.
Sample space and tree diagrams
Sample space diagram used to find the rule for P(A and B). Fractions to calculate the P(A and B). Tree diagrams with fractions, decimals and fractions without replacement.
Two way tables with missing information