C Standard	B Standard	A Standard	A+ Standard
Evidence of 2 histograms comparing 2 different data sets.	Evidence of 2 histograms comparing 2 different data sets.	Evidence of 2 histograms comparing 2 different data sets.	Evidence of 2 histograms comparing 2 different data sets.
Written description of the interpretation of the distribution of the data in the histograms.	Written description of the interpretation of the distribution of the data in the histograms.	Written description of the interpretation of the distribution of the data in the histograms.	Written description of the interpretation of the distribution of the data in the histograms.
Evidence of a back-to-back stem-and-leaf plot comparing 2 different data sets.	Evidence of a back-to-back stem-and-leaf plot comparing 2 different data sets.	Evidence of a back-to-back stem-and-leaf plot comparing 2 different data sets.	Evidence of a back-to-back stem-and-leaf plot comparing 2 different data sets.
Evidence of the calculation of the measures of centrality (mean, median, mode and range) of 2 different data sets.	Evidence of the calculation of the measures of centrality (mean, median, mode and range) of 2 different data sets.	Evidence of the calculation of the measures of centrality (mean, median, mode and range) of 2 different data sets.	Evidence of the calculation of the measures of centrality (mean, median, mode and range) of 2 different data sets.
Written description of the interpretation of the measures of centrality.	Written description of the interpretation of the measures of centrality.	Written description of the interpretation of the measures of centrality.	Written description of the interpretation of the measures of centrality.
Identify an outlying data from the 2 different data sets.	Identify an outlying data from the 2 different data sets.	Identify an outlying data from the 2 different data sets.	Identify an outlying data from the 2 different data sets.
	Evidence of the calculation of the quartiles and the interquartile range.	Evidence of the calculation of the quartiles and the interquartile range.	Evidence of the calculation of the quartiles and the interquartile range.
	Evidence of the construction of 2 different box plots representing the data collected.	Evidence of the construction of 2 different box plots representing the data collected.	Evidence of the construction of 2 different box plots representing the data collected.
	Written description of the comparison of the 2 box plots to discuss the distribution of data.	Written description of the comparison of the shape of the 2 box plots to discuss the distribution of data.	Written description of the comparison of the shape of the 2 box plots to discuss the distribution of data.
		Construction of a scatter plot to investigate and comment on the relationship between 2 numerical variables.	Construction of a scatter plot to investigate and comment on the relationship between 2 numerical variables.
			Evidence of the calculation of the standard deviation of a data set.
			Written description of the interpretation of the standard deviation of 2 different data sets.