Question: 3. The following diagram is a stem and leaf plot of the Life Optimism scores of the employees at La Trobe University. Life optimism Stem-and-Leaf

3. The following diagram is a stem and leaf plot of the Life Optimism scores of the employees at La Trobe University.

Life optimism Stem-and-Leaf Plot

Frequency Stem & Leaf

1.00 Extremes (=<4)

3.00 0 . 889

11.00 1 . 00023344444

37.00 1 . 5555666666777777777888888999999999999

22.00 2 . 0001111222222333444444

10.00 2 . 6666677778

Stem width: 10

Each leaf: 1 case(s)

(a) How many employees scored 17 on the Life Optimism scale? (1mark)

(b) How many scores below ten were recorded? (1mark)

(c) Is the distribution of the scores bell-shaped, negatively skewed or positively skewed? (1mark)

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