Investigating Data worksheets for Grade 6 (Elementary School)

The character of a set of figures is captured through the mean, the median and the mode. Starting from Mean of the Data, the unit moves through Various Representative Values and Comparing Representative Values of Two Groups, then organizes the figures into a frequency distribution table, draws a histogram, and reads off which class holds the most.

When finding the median, choosing the middle of the list as written rather than sorting by size is the most frequent error. Not taking the mean of the two middle values when the count is even belongs to the same pattern. In a frequency distribution table, a boundary value of 20 in a class of 20 and over and under 25 gets put in the previous class, and the total is off by one.

What is handled broadens from a single row of numbers to the character of a whole group. The experience of comparing two groups' figures together in Average in grade 5 is widened here to representative values in general, with a new way of organizing them, the frequency distribution table, added on. The topic then shifts, in Area of a Circle, to finding surface with a formula.