Practice Questions
 

Test yourself - Statistics What is raw data? What is the difference between discrete and continuous data? What is the mode? What is meant by the median? What is the mean? Name 2 types of statistical diagram. Name 3 types of measures of spread. What is the range? What is meant by the lower quartile of a frequency distribution? What is the inter-quartile range?	Answers The initial, unsorted data. Continuous data has no 'gaps'. The most frequent (or common). The middle value. The average found by dividing the total by the number of numbers. e.g. bar chart, pie chart, line graph, pictogram, histogram.... Range, IQR, standard deviation. Difference between largest and smallest. Quarter of the way through distribution. Upper quartile - lower quartile.