AQA Certificate Level 3 Mathematical Studies₁₃₅₀

D1.1

appreciating the difference between qualitative and quantitative data

including the difference between discrete and continuous quantitative data

D1.2

appreciating the difference between primary and secondary data

including the use of secondary data that have been processed eg grouped

D1.3

collecting quantitative and qualitative primary and secondary data

D2.1

inferring properties of populations or distributions from a sample, whilst knowing the limitations of sampling

D2.2

appreciating the strengths and limitations of random, cluster, stratified and quota sampling methods and applying this understanding when designing sampling strategies

appreciating that improving accuracy by removing bias and increasing sample size may cost/save both time and money

D3.1

calculating/identifying mean, median, mode, quartiles, percentiles, range, interquartile range, standard deviation

either from raw data or from cumulative frequency diagrams, stem-and-leaf diagrams or box plots

D3.2

interpreting these numerical measures and reaching conclusions based on these measures

D4.1

constructing and interpreting diagrams for grouped discrete data and continuous data, knowing their appropriate use and reaching conclusions based on these diagrams

including histograms with equal and unequal class intervals and cumulative frequency graphs, box and whisker plots, stem-and-leaf diagrams (including back-to-back)