Consider the following time series data.

Month 1 2 3 4 5 6 7

Value 24 13 20 12 19 23 15

a. Construct a time series plot. What type of pattern exists in the data?

b. Develop a three-week moving average for this time series. Compute MSE and a forecast for week 8.

c. Use ? ? 0.2 to compute the exponential smoothing values for the time series. Compute MSE and a forecast for week 8.

d. Compare the three-week moving average forecast with the exponential smoothing forecast using ? ? 0.2. Which appears to provide the better forecast based on MSE?

e. Use trial and error to find a value of the exponential smoothing coefficient that results in a smaller MSE than what you calculated for ? ?0.2.

The table shows population statistics for the ages of best actor and best supporting actor winners at an awards ceremony. the distributions of the ages are approximately bell-shaped. compare the z-scores for the actors in the following situation. best actor best supporting actor muequals42.0 muequals49.0 sigmaequals7.3 sigmaequals15 in a particular year, the best actor was 59 years old and the best supporting actor was 45 years old. determine the z-scores for each. best actor: z equals best supporting actor: z equals (round to two decimal places as needed.) interpret the z-scores. the best actor was (more than 2 standard deviations above more than 1 standard deviation above less than 1 standard deviation above less than 2 standard deviations below) the mean, which (is not, is) unusual. the best supporting actor was (less than 1 standard deviation below more than 1 standard deviation above more than 2 standard deviations below more than 1 standard deviation below) the mean, which (is is not) unusual.

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.

Identify the statement below as either descriptive or inferential statistics. upper a certain website sold an average of 117 books per day last week. is the statement an example of descriptive or inferential statistics? a. it is an example of descriptive statistics because it uses a sample to make a claim about a population. b. it is an example of inferential statistics because it uses a sample to make a claim about a population. c. it is an example of inferential statistics because it summarizes the information in a sample. d. it is an example of descriptive statistics because it summarizes the information in a sample.