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

Author Question: The variance of the sample consisting of the values 2, 4, 6, 8, 10 is a. 6 c. 10 b. 8 d. ... (Read 66 times)

a0266361136

  • Hero Member
  • *****
  • Posts: 538
on: Jun 29, 2018
The variance of the sample consisting of the values 2, 4, 6, 8, 10 is
 a. 6 c. 10
  b. 8 d. 12

Question 2

When a third variable inserted into the analysis changes the results when two other variables were studied previously, this third variable is called a moderator variable.
 
 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

laurnthompson

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jun 29, 2018
Answer to Question 1

C
The variance is the sum of squared deviations divided by the degrees of freedom.
This can be calculated with the deviations from the mean (of 6) and the df = n1:
(26)2 + (46)2 + (66)2 + (106)2 / (51) = (16 + 4 + 0 + 16)/4 = 10

Or one could use the computational formula of

=(4+16+36+64+100)  (30)2/n / (n1) = (220180)/4 = 40/4 = 10

Answer to Question 2

T


a0266361136

  • Member
  • Posts: 538
Reply 2 on: Jun 29, 2018
Gracias!

parshano

  • Member
  • Posts: 333
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

A small sample of the great diversity of seed sizes and shapes. A small sample of the great diversity of seed sizes and shapes.
The values of Φ and Ψ for all the amino acid The values of Φ and Ψ for all the amino acid
Sample Advance Directive Cont. Sample Advance Directive Cont.
A sample flow sheet. A sample flow sheet.
Performance of a delayed nonmatching-to-sample trial. Performance of a delayed nonmatching-to-sample trial.
Finding the graph of a Parabola using certain values Finding the graph of a Parabola using certain values
Video: Acid-base imbalances - respiratory acidosis and alkalosis

For a complete list of videos, visit our video library