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WorksheetWORKSHEET

Central Tendency and Dispersion Worksheet

1996 1997 1998 1999 2000
Q1 n.a. 7.3 6.4 6.2 5.8
Q2 n.a. 7.2 6.3 6.0 5.5
Q3 8.1 6.8 6.3 5.9 5.4
Q4 7.9 6.6 6.2 5.9 n.a.

Table 1: ILO unemployment rate 1996 (Q3) - 2000 (Q3) : UK: All: Aged 16 and over: %: SA Source: National Statistics

Q1. Using the data above on UK unemployment 1996-2000 calculate the median value.
(Select one answer)

(a) * 6.3
(b) * 6.2
(c) * 6.4
Q2. Using the data above on UK unemployment 1996-2000 calculate the modal value.
(Select one answer)

(a) * 5.9
(b) * 6.3
(c) * 5.9, 6.2, 6.3.
Q3. Using the data on UK unemployment 1996-2000 calculate the mean value.
(Select one answer)

(a) * 6.5
(b) * 6.45
(c) * There is no mean value.
Q4. From the table of data above on unemployment, calculate the range.
(Select one answer)

(a) * 5.4
(b) * 2.7
(c) * 8.1
Q5. From the table of data above on unemployment, calculate the mean absolute deviation.
(Select one answer)

(a) * 6
(b) * 0.6
(c) * 0.4
Q6. From the table of data above on unemployment, calculate the variance.
(Select one answer)

(a) * 0.55
(b) * 5.5
(c) * 0.05
Q7. From the table of data above on unemployment, calculate the standard deviation.
(Select one answer)

(a) * 7.4
(b) * 0.74%
(c) * 0.74
Click to view your total score for all the above questions that you have attempted.

Now try comparing this with the same findings from the period 1992 - 1996 and make some comments about what you have found. You can get the data you need either from the TimeWeb sample data or the main TimeWeb Explorer (please note that you will need to be studying at a UK-based Higher or Further Education college or university to use this).

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