In a quality control setting, the sample mean provides enough evidence to determine if a process is ...

In a quality control setting, the sample mean provides enough evidence to determine if a process is working properly.
 
  Indicate whether the statement is true or false

Q. 2

A stem and leaf display allows you to observe individual data values while a histogram groups data values together.
 
  Indicate whether the statement is true or false

Q. 3

A method of gathering data while the subjects of interest are in their natural environment, often unaware they are being watched, is known as ____________.
 
  A) direct observation
  B) focus groups
  C) experiments
  D) surveys

Q. 4

The sample variance is a biased estimator of the population variance because we would expect the average of many sample variances taken from a population would be equal to the true population variance.
 
  Indicate whether the statement is true or false

Q. 5

Joint probability is another term used for simple probability.
 
  Indicate whether the statement is true or false