Question

1. 345, 245, 122, 133, 200

determine the mean of the set of data above.
a. 1,045 b. 222 c. 209 d. 200

1. in which data set below is the mean 5?

a. 4, 5, 5, 8
b. 1, 2, 3, 6
c. 5, 5, 6, 7
d. 4, 4, 5, 7

Explanation:

(Question 4):

Step1: Sum all data values

$345 + 245 + 122 + 133 + 200 = 1045$

Step2: Divide by number of values

$\frac{1045}{5} = 209$

(Question 6):

Step1: Check Option A sum

$4 + 5 + 5 + 8 = 22$, $\frac{22}{4} = 5.5$

Step2: Check Option B sum

$1 + 2 + 3 + 6 = 12$, $\frac{12}{4} = 3$

Step3: Check Option C sum

$5 + 5 + 6 + 7 = 23$, $\frac{23}{4} = 5.75$

Step4: Check Option D sum

$4 + 4 + 5 + 7 = 20$, $\frac{20}{4} = 5$

Answer:

Question 4: C. 209
Question 6: D. 4, 4, 5, 7