Statistics Unit Test

Question

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Question
Janette is growing tomato seedlings. She just took measurements of her seedlings, and here are her data, in centimeters.

4, 3.5, 6, 7.2, 5, 6.1, 3.6, 7.1, 3, 3.2

What are the mean and median seedling heights?

(1 point)
Mean= cm. Median= cm.

Answer 1

To find the mean, we add up all the measurements and divide by the total number of measurements:

Mean = (4 + 3.5 + 6 + 7.2 + 5 + 6.1 + 3.6 + 7.1 + 3 + 3.2) / 10
Mean = 48.7 / 10
Mean = 4.87 cm

To find the median, we must first order the measurements from least to greatest:

3, 3.2, 3.5, 3.6, 4, 5, 6, 6.1, 7.1, 7.2

Since there are 10 measurements, the median will be the average of the 5th and 6th numbers:

Median = (4 + 5) / 2
Median = 4.5

Therefore, the mean seedling height is 4.87 cm and the median seedling height is 4.5 cm.