The three-moving mean for time period 2 is closest to:

Question

BlackTom AI · Accepted Answer

First, restating the problem helps orient the calculation: the three-period moving mean for time period 2 uses the data values from periods 1, 2, and 3.

Option a. 3.6
To assess this, compute the actual three-term average: (2.3 + 3.4 + 4.4) / 3 = 10.1 / 3 ≈ 3.366... The closest value to 3.366 is not 3.6; 3.6 is about 0.234 higher.

Option b. 3.4
Comparing 3.366... to 3.4, the difference is about 0.034, which is smaller than the differences for the other options. This is a close match.

Option c. 3.9
The difference between 3.366... and 3.9 is roughly 0.534, a noticeably larger gap than for 3.4, so this is not the closest.

Option d. 4.0
The difference between 3.366... and 4.0 is about 0.634, again clearly larger than the 0.034 gap to 3.4.

Summary of reasoning: the three-term moving average for time period 2 is determined by averaging periods 1–3, giving 3.366..., which is closest to 3.4 among the provided choices because it yields the smallest absolute difference. The other options are progressively farther from the computed mean due to larger gaps.

The three-moving mean for time period 2 is closest to:

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