A car is 200 km from its destination after an hour and 80 km from its destination after 3 hour
1 answer:
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Answer:
Step-by-step explanation:
3x + 4y = 16
- 3x - 3x
__________
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Using it's concepts, the mean and the standard deviation of the data-set are given as follows:
B. mean: 17; standard deviation: 7.53.
<h3>What are the mean and the standard deviation of a data-set?</h3>- The mean of a data-set is given by the <u>sum of all values in the data-set, divided by the number of values</u>.
- The standard deviation of a data-set is given by the <u>square root of the sum of the differences squared between each observation and the mean, divided by the number of values</u>.
The mean for this problem is:
M = (22 + 21 + 20 + 4 + 19 + 6 + 24 + 11 + 26)/9 = 17
The standard deviation is:
Hence option B is correct.
More can be learned about the mean and the standard deviation of a data-set at brainly.com/question/28048096
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