Question

the table shows the heights, in inches, of players on a girls’ basketball team.
basketball team heights
70 68 72 66 68
69 66 71 74 66
what is the mean height, rounded to the nearest whole number if necessary?
○ 66
○ 68
○ 69
○ 70

Explanation:

Step1: Sum all the heights

First, we list out all the heights: 70, 68, 72, 66, 68, 69, 66, 71, 74, 66.
Now we sum them up:
\(70 + 68 + 72 + 66 + 68 + 69 + 66 + 71 + 74 + 66\)
Let's calculate step by step:
\(70+68 = 138\)
\(138+72 = 210\)
\(210+66 = 276\)
\(276+68 = 344\)
\(344+69 = 413\)
\(413+66 = 479\)
\(479+71 = 550\)
\(550+74 = 624\)
\(624+66 = 690\)

Step2: Calculate the mean

The mean is the sum of all values divided by the number of values. There are 10 values (since there are 10 heights in the table).
So the mean \(=\frac{690}{10}= 69\)

Answer:

69 (corresponding to the option "69")