24d: Read a pictogram for categorical data given a simple key
25d: Read from or complete a bar chart for categorical data with a simple scale
28d: Recognise the mode from a list of data or a bar chart
30d: Calculate the range from a list of data or a bar chart
31d: Calculate the median from an odd or even list of data
33d: Compare data by referring to mode / median and range
38d: Draw a stem and leaf diagram and use it to find mode, median or range
40d: Distinguish between types of data: discrete, continuous and categorical
42d: Calculate the mean from a list of data and compare which is the best average to use
48d: Read and interpret pie charts including working out fractions or totals for each category
52d: Identify possible outliers from a list of data and omit them in calculating range
59d: Calculate the mean, mode or median from a frequency table
60d: Use averages to work out the values of missing data
62d: Plot frequency polygons and state the modal class or the class containing the median from a grouped frequency table
63d: Calculate the mean from a grouped frequency table
64d: Compare distributions of data by referring to averages and spread
65d: Define random sample and explain a method of selecting a random sample
66d: Use data from a sample to estimate properties of the population and explain how bias might influence these estimate
69d: Explain that correlation does not imply causation in a given context
70d: Distinguish between interpolation and extrapolation in line of best fit estimates and comment on reliability
71d: Find the combined mean of two sets of data or calculate a new mean when extra data is added
Higher tier only
76d: Define stratified sampling and calculate the size of a layer in a stratified sample. Solve mark and recapture probl
78d: Find the quartiles from a list of data and calculate and compare inter-quartile range
80d: Read median and frequency above or below a given value from a cumulative frequency graph
81d: Read quartiles from a cumulative frequency graph and calculate and compare inter-quartile range
83d: Compare distribution of data shown in box plots
84d: Read bivariate data from a scatter graph and use it to draw and compare box plots
87d: Read and use frequencies from a histogram
89d: Calculate and interpret the gradient or equation of a line of best fit
91d: Use a partial frequency table and partial histogram to complete both
94d: Use a histogram to estimate median, quartiles or frequency above or below a value that isn't a class boundary
