0
Point Estimate of the Mean:
The point estimate of the mean is 16, since this is the sample mean.
95% Confidence Interval Estimate for the Mean:
The 95% confidence interval estimate for the mean can be calculated using the following formula:
Mean +/- Margin of Error = (16 +/- 1.96*(9/sqrt(50))) = 16 +/- 1.51 = 14.49 to 17.51
99% Confidence Interval Estimate for the Mean:
The 99% confidence interval estimate for the mean can be calculated using the following formula:
Mean +/- Margin of Error = (16 +/- 2.58*(9/sqrt(50))) = 16 +/- 2.13 = 13.87 to 18.13
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What are the components of time series?
secular trend, seasonal variation, cyclical variation, and irregular variation
Determine Coefficient of variation from the mean and standard deviation?
Coeff of Variation = Mean/SD
What is an anova test?
An ANOVA is an analysis of the variation present in an experiment. It is a test of the hypothesis that the variation in an experiment is no greater than that due to normal variation of individuals' characteristics and error in their measurement.
Can you have a negative coefficient in a direct variation?
Yes, you can have a negative coefficient in a direct variation. So if you had y = -7x, that would be a direct variation. If you have y = -x, I do not know, if that is what you mean. Hope it helped.
What is the difference between standard deviation and coefficient of variation?
standard deviation only measures the average deviation of the given variable from the mean whereas the coefficient of variation is = sd\mean Written as "cv" If cv>1 More variation If cv<1 and closer to 0 Less variation
