GCSE Intermediate

HANDLING DATA

Design and use data collection sheets for grouped and continuous data
Collect data using observation, controlled experiment, data logging, questionnaires and surveys
Gather data from secondary sources
Design and use two way tables for discrete and grouped data

Draw and produce pie charts for categorical data, and diagrams for continuous data including line graphs for time series; scatter diagrams; frequency tables and stem-and-leaf diagrams; cumulative frequency tables and diagrams and box plots

Calculate mean, range and median of small sets of data with discrete then continuous data; identify the modal class for grouped data.
Find the median, quartiles and interquartile range for large sets of data and calculate the mean for large sets of data with grouped data.
Calculate an appropriate moving average

Draw lines of best fit by eye, understanding what they represent

Understand and use the probability scale
Understand and use estimates or measures of probability from theoretical models, or from relative frequency
List all outcomes for single events, and for 2 successive events, in a systematic way
Identify different mutually exclusive outcomes and know that the sum of the probabilities of these is 1.

Use tree diagrams to represent outcomes of compound events, recognizing when the events are independent.

Interpret a wide range of graphs and diagrams and draw conclusions; identify trends in time series
Compare distributions and make inferences, using shapes of distributions and measures of average and spread, including median and quartiles.
Identify Correlation or no correlation using lines of best fit
Appreciate that correlation is a measure of strength between 2 variables
Distinguish between positive, negative and zero correlation using lines of best fit.

Compare experimental and theoretical data
Understand that if you repeat an experiment they will get different outcomes, and that increasing sample size leads to better estimates of probability

Interpret social statistics including index numbers; time series; and survey data.