The Frequentist approach looks at   Question 17 options:   the long-term relative frequency of events occurring   both single events occurring and the long-term relative frequency of events occurring

Forecasting models extrapolate future values of a time series based on its historical values, allowing you to attempt to predict the evolution of a measure. Which mathematical model does Tableau's forecasting tool use?  Exponential Smoothing Simple Moving Average Weighted Moving Average

Describe how OLAP differs from other types of analytical tools in descriptive statistics.

CRUD analysis helps to identify possible collaborations between objects  True   False

An analyst must decide between two different forecasting techniques for weekly sales of roller blades: a linear trend equation and the naive approach. The linear trend equation is F = 124 + 2.1t, and it was developed using data from periods 1 through 10. Based on data for periods 11 through 20 as shown in the table, which of these two methods has the greater accuracy if MAD and MSE are used? (Round your intermediate calculations and final answers to 2 decimal places.) t Units Sold 11 144 146 152 14 142 15 152 16 149 17 152 18 154 19 157 20 164 Click here for the Excel Data File MAD (Naive) MAD (Linear) MSE (Naive) MSE (Linear) N M S 1O H d d H d d - d

A method to measure how well predictions fit actual data is     tracking signal   decomposition   regression   smoothing

Differentiate between descriptive and inferential statistics and explain. .

How would you know if the data showed heteroscedasticity?

What does the z-score of a data point tell us? Group of answer choices How many standard deviations a number is from the mean. How many IQR the max and min are from the mean. How far a number is from the mean. How many IQR a number is from the mean.

Software randomization—how? Resize or shift rand function values?