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The measure of forecast accuracy that is not influenced by the measurement scale of the time series data is:
a. the mean absolute deviation (MAD).
b. the mean square error (MSE).
c. the root mean square error (RMSE).
d. the mean absolute percentage error (MAPE).
In addition, record the values for the UCL, center line, and LCL. Also, record any points that are out of control. Use a z-value of three.
The main goal of correlation research is ______________
Findout the margin of error for this survey if we want a 99 percent confidence in our estimate of the percent of adults over 50 who take vitamin supplements.
The sample size n, the sample means, and the sample standard deviations for the two groups are given
What is the probability that no more than two of the three are commercial successes?
The following frequency distribution was obtained. The data values are in hours. Construct a histogram for the data .
Calculate a 95% confidence interval for the population mean, based on the sample 10, 12, 13, 14, 15, 16, and 49.
What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence?
To test whether there is significant mean difference between two groups using independent sample t test.
Carry out F test for significance of straight line regression of Y on X and interpret your results.
Determine the 95% confidence interval for your estimate what data have you utilized as the basis of your predictions what suppositions have you made.
Given length an athlete throws a hammer is a normal random variable with mean 50 feet and standard deviation five feet, what is the probability he throws it: Between 50 feet and 60 feet.
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