Two independent estate agencies each employ 9 people. The number of years’ experience in the property sector that the employees of these companies have is Agency A 0 4 4 5 7 8 10 11 15 Agency B 0 0 4 4 7 10 10 14 15 Find the range of each set of data and compare them. Plot histograms for each set of data.

Range (A) = 15 – 0 Range (B) = 15 – 0 The ranges are exactly the same, but this does not necessarily mean that the observations in the two distributions are spread out in exactly the same way.