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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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sldar216 sldar216
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6 years ago
Smoothing time series data by the moving average method or exponential smoothing method is an attempt to remove the effect of the random variation component.
  Indicate whether the statement is true or false

Q. 2

A calculus professor wanted to test whether the grades on calculus test were the same for upper and lower classmen. The professor took a random sample of size 12 from each group. For this situation, the professor should use a matched pairs t-test.
  Indicate whether the statement is true or false

Q. 3

A time series can consist of four different components: long-term trend, cyclical variation, seasonal variation, and random variation.
  Indicate whether the statement is true or false

Q. 4

The pooled variance estimator is the ____________________ average of the two sample variances.
 Fill in the blank(s) with correct word

Q. 5

Given a data set with 15 yearly observations, a 3-year moving average will have fewer observations than a 5-year moving average.
  Indicate whether the statement is true or false
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1834418126318344181263
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6 years ago
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sldar216 Author
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#2
6 years ago
Thank you Jesus, my teacher is bad at explaining
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#3
6 years ago
Praise the LORD ha ha No worries
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