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

Author Question: Stratified random sampling is a method of selecting a sample in which _____. a. the sample is first ... (Read 133 times)

tuffie

  • Hero Member
  • *****
  • Posts: 534
on: Jun 24, 2018
Stratified random sampling is a method of selecting a sample in which _____.
 a. the sample is first divided into strata, and then random samples are taken from each stratum
  b. various strata are selected from the sample
  c. the population is first divided into strata, and then random samples are drawn from each stratum
  d. None of the answers is correct.

Question 2

The value of the standard deviation may be either positive or negative, while the value of the variance will always be positive.
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

lorealeza77

  • Sr. Member
  • ****
  • Posts: 356
Reply #1 on: Jun 24, 2018
Answer to Question 1

c

Answer to Question 2

F


tuffie

  • Hero Member
  • *****
  • Posts: 534
Reply #2 on: Jun 24, 2018
Thank you


lorealeza77

  • Sr. Member
  • ****
  • Posts: 356
Reply #3 on: Jun 24, 2018
No problemo


« previous next »
 

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Graphic summary of the scientific method. Graphic summary of the scientific method.
Retrograde Tracing Method Retrograde Tracing Method
Sample Problem from Raven’s Progressive Matrices Sample Problem from Raven’s Progressive Matrices
Sample of Enzymes Sample of Enzymes
How to solve a pair of linear equations using the Addition-Subtraction Method How to solve a pair of linear equations using the Addition-Subtraction Method
(left) Urine sample from an unaffected person does not change color upon exposure to air. (right) Ur (left) Urine sample from an unaffected person does not change color upon exposure to air. (right) Ur
Video: How do the different types of chromatography work? (No Audio)

For a complete list of videos, visit our video library