This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Suppose your data set contains ages (in years) and you calculate the range, variance, standard ... (Read 114 times)

karen

  • Hero Member
  • *****
  • Posts: 537
on: Aug 1, 2018
Suppose your data set contains ages (in years) and you calculate the range, variance, standard deviation, and coefficient of variation for the data. Explain what units each of these measures is in.

Question 2

In testing the null hypothesis H0: The process is in control, explain the difference between a Type I error and Type II error.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cuttiesgirl16

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Aug 1, 2018
Answer to Question 1

Range subtracts two years (largest minus smallest) so it is still in units of years. The variance is the average squared deviation from the mean, which is measured in square units. In this case, years squared. (These units have no meaning in this case.) The standard deviation is the square root of the variance, taking the units back to years. The coefficient of variation takes the standard deviation (in years) divided by the mean (in years) and hence has no units at all.

Answer to Question 2

A Type I error is rejecting a true null hypothesis; therefore, a Type I error in this situation will result in a belief that the process is not in control when it really is. A Type II error is failing to reject a false null hypothesis; therefore, a Type II error in this situation will result in a belief that the process is in control when it really is not.


karen

  • Hero Member
  • *****
  • Posts: 537
Reply #2 on: Aug 1, 2018
Thank you!


cuttiesgirl16

  • Sr. Member
  • ****
  • Posts: 345
Reply #3 on: Aug 1, 2018
Always glad to help...


« previous next »
 

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

During drought years on the Galapagos, small, easily eaten seeds become rare, le During drought years on the Galapagos, small, easily eaten seeds become rare, le
World Population Growth, Past 10,000 years World Population Growth, Past 10,000 years
The 2012 U.S. presidential campaign rang with “get tough” cries to end Iran’s nuclear capacity and c The 2012 U.S. presidential campaign rang with “get tough” cries to end Iran’s nuclear capacity and c
Americans Ages 20-24 Who Have Married Americans Ages 20-24 Who Have Married
Basic Marketing Research: Using Microsoft Excel Data Analysis Basic Marketing Research: Using Microsoft Excel Data Analysis
. Calculate the net electric field at point B . Calculate the net electric field at point B
Video: Neuron Type Animation

For a complete list of videos, visit our video library