A line chart is most appropriate for:

A line chart is most appropriate for:
 
  A) cross-sectional data.
  B) nominal level data.
  C) ordinal level data.
  D) time-series data.

Q. 2

The Tukey-Kramer method for multiple comparisons can only be used when the analysis of variance design is balanced.
 
  Indicate whether the statement is true or false

Q. 3

The number of no-shows each day for dinner reservations at the Cottonwood Grille is a discrete random variable with the following probability distribution:
 
  No-shows Probability
  0 0.30
  1 0.20
  2 0.20
  3 0.15
  4 0.15
 
  Based on this information, the expected number of no-shows is 1.65 customers.
   Indicate whether the statement is true or false

Q. 4

To show how the price of a stock has changed over the last 3 months, the best type of chart to use is:
 
  A) a pie chart.
  B) a histogram.
  C) a line chart.
  D) a bar chart.

Q. 5

A population, with an unknown distribution, has a mean of 80 and a standard deviation of 7. For a sample of 49, the probability that the sample mean will be larger than 82 is:
 
  A) 0.5228
  B) 0.9772
  C) 0.4772
  D) 0.0228