The stem-and-leaf diagram shows task-completion times in seconds. Find \(\text{Task-completion time

Question

The stem-and-leaf diagram shows task-completion times in seconds. Find $\text{Task-completion time (s)}$ $\text{Stem}$ $\text{Leaf}$ $\text{0}$ $\text{6 8 9}$ $\text{1}$ $\text{2 5 7 8}$ $\text{2}$ $\text{1 5 9}$ $\text{3}$ $\text{1 1 4 6 8}$ $\text{4}$ $\text{2 5 7}$ $\text{Key: 2 | 5 means 25 s}$

Accepted Answer

(a) $27$ s (b) $31$ s (c) $26.7$ s.

Task-completion times and a revised mean

Task-completion times and a revised mean

Solution:

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