The degrees of freedom for a contingency table with 11 rows and 10 columns is:

The degrees of freedom for a contingency table with 11 rows and 10 columns is:
 
  A) 11
  B) 10
  C) 110
  D) 90

Q. 2

The Morgan Company is interested in developing a forecast for next month's sales. It has collected sales data for the past 12 months.
 
  Month Sales
  1 100
  2 120
  3 90
  4 150
  5 170
  6 150
  7 180
  8 205
  9 220
  10 195
  11 230
  12 240
 
  After analyzing these data, if the company wishes to use double exponential smoothing with alpha = 0.20 and beta = 0.20, the starting values for the constant process and the trend process can be derived from a linear trend regression model by using the intercept and slope coefficient respectively.
   Indicate whether the statement is true or false

Q. 3

One of the roles of managers who are overseeing the statistical process control analysis is to set the control limits at the desired levels prior to collecting data from the process.
 
  Indicate whether the statement is true or false

Q. 4

Which of the following statements is true?
 
  A) If the confidence interval estimate for the regression slope coefficient, based on the sample information, crosses over zero, the true population regression slope coefficient could be zero.
  B) R-square will tend to be smaller than the adjusted R-squared values when insignificant independent variables are included in the model.
  C) The y-intercept will usually be negative in a multiple regression model when the regression slope coefficients are predominately positive.
  D) None of the above

Q. 5

In a double smoothing model, large values for the two smoothing constants will result in greater smoothing of the time series.
 
  Indicate whether the statement is true or false