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Mean, Median and Mode · Question 6 of 67

Question 6

EasyOriginal question

Anjali ran five 100 m trials in 13.4 s, 13.9 s, 13.1 s, 14.2 s and 13.4 s. What was her mean time?

Options for question 6

Show the answer and explanation
CorrectNot quiteAnswer B

Correct answer: B

Explanation

  1. Total = 13.4+13.9+13.1+14.2+13.4=68.013.4 + 13.9 + 13.1 + 14.2 + 13.4 = 68.0 s.

  2. Mean = 68.05=13.6\frac{68.0}{5} = 13.6 s.

Worth noting

13.4 s is both the median and the mode. 13.65 s averages only the fastest and slowest runs, and 17 s divides the total by 4.

Concept
Mean of decimal data
Typical time
40 s
Your time
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The rule this testsMean, median and mode
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