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I Trying to Predict Weekly Sales with a Standard Error

question 104

Multiple Choice

i. Trying to predict weekly sales with a standard error of estimate of $1,955, we would conclude that 68 percent of the predictions would not be off more than $1,955, 95 percent would not be off by more $3,910, and 99.7 percent would not be off by more than $5,865. ii. The smaller the sample, the smaller the possible error as measured by the standard error of estimate.
iii. Approximately 95% of the values lie within two standard errors of the regression line.


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