Question

Is the data set approximately periodic? If so, what are the period and amplitude?

The tables show the value of a stock, in dollars, each week for 20 weeks.

Identify whether the data set is approximately periodic and, if so, determine the period and amplitude.

Question 2 options:

The data set is not approximately periodic.


The data set is approximately periodic with a period of 5 and an amplitude of about 3.


The data set is approximately periodic with a period of 10 and an amplitude of about 6.


The data set is approximately periodic with a period of 10 and an amplitude of about 11.

Answer 1

The data set is not approximately periodic.

Explanation:

The given data doesn't show any periodic pattern, the change is not constant, and it doesn't simulate any simple pattern because the increase is like random, the first increase is for 1.35, the second is for 0.13, the third one is for 0.65, it doesn't show any periodic behaviour.

In addition, the variables involved aren't periodic, because it's about stocks, which it changes randomly.

Therefore, the right answer is the first option.

Answer 2

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➷ The data set is not approximately periodic

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