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Yakvenalex [24]
2 years ago
7

You improve your time running a course by 5 seconds in week one, by 3 seconds in week two, and by 4 seconds in week three. What

is the mean weekly change in your running time?
Mathematics
1 answer:
wariber [46]2 years ago
3 0

Answer:

\displaystyle \bar x=4\ sec

Step-by-step explanation:

<u>Average Value </u>

The mean or average of a number n of measurements is defined as the sum of all values divided by n.

\displaystyle \bar x=\frac{\sum x_i}{n}

The running times in seconds are being improved by the following numbers:

5, 3, 4

This is the dataset where we have to find the mean value. Here n=3. Applying the formula:

\displaystyle \bar x=\frac{5+4+3}{3}

\displaystyle \bar x=\frac{12}{3}

\displaystyle \bar x=4\ sec

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