Question

d) 4.5

1. a data set representing the weekly hours spent exercising is {0, 2, 3, 1, 4, 5, 0}. what is the range of hours spent exercising?

a) 3
b) 4
c) 5
d) 6

1. a student recorded the temperatures over a week in degrees celsius: 20, 22, 21, 20, 23, 20, 22. what is the mean temperature for the week?

a) 20
b) 20.5
c) 21
d) 21.1

Explanation:

Step1: Find max/min for range

Max value = 5, Min value = 0

Step2: Calculate range

$\text{Range} = 5 - 0 = 5$

Step3: Sum temperatures for mean

$20 + 22 + 21 + 20 + 23 + 20 + 22 = 148$

Step4: Compute mean (7 data points)

$\text{Mean} = \frac{148}{7} \approx 21.1$

Answer:

1. C) 5
2. D) 21.1