AC9M7ST01 Year 7 Mathematics

Content descriptor acquire data sets for discrete and continuous numerical variables and calculate the range, median, mean and mode; make and justify decisions about which measures of central tendency provide useful insights into the nature of the distribution of data

Elaborations

• • Elaboration understanding that summarising data by calculating measures of centre can help make sense of the data, commenting on skewness or symmetry of data and the use of mean and median as representative measures
• • Elaboration comparing the mean, median, mode and range of displays of data from a given context, and explaining how outliers may affect summary statistics
• • Elaboration recognising how different data sets can have the same measures of central tendency and experimenting with how varying data affects these measures
• • Elaboration acquire continuous numerical data by taking measurement samples during a science experiment, observation or field study, comparing measures of central tendency and identifying any anomalies in the distribution of data
• • Elaboration exploring how descriptive statistics are used by artificial intelligence developers to summarise and analyse data, assist the artificial intelligence in making informed decisions, and gain insights from the processed data; for example, descriptive statistics in recommendation systems can help analyse user behaviour and preferences