EM-1264
Measures of spread
E Math · Secondary 3 · Medium · Measures of spread
The five numbers 3, 7, 7, 10 and 13 have a standard deviation of 3.4 (correct to 1 d.p.). If each number is increased by 2, what is the new standard deviation?
- 3.4
- 1.4
- 5.4
- 6.8
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