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

Author Question: The variance is a measure of dispersion or variability of a random variable. It is a weighted ... (Read 82 times)

mspears3

  • Hero Member
  • *****
  • Posts: 586
on: Jun 24, 2018
The variance is a measure of dispersion or variability of a random variable. It is a weighted average of the
 a. square root of the deviations from the mean
  b. square root of the deviations from the median
  c. squared deviations from the median
  d. squared deviations from the mean

Question 2

The standard deviation is the
 a. variance squared
  b. square root of the sum of the deviations from the mean
  c. same as the expected value
  d. positive square root of the variance


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

lou

  • Sr. Member
  • ****
  • Posts: 286
Reply #1 on: Jun 24, 2018
Answer to Question 1

D

Answer to Question 2

D


mspears3

  • Member
  • Posts: 586
Reply 2 on: Jun 24, 2018
Thanks for the timely response, appreciate it

phuda

  • Member
  • Posts: 348
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
Using the voltmeter leads from a starting and charging test unit to measure the voltage drop ... Using the voltmeter leads from a starting and charging test unit to measure the voltage drop ...
How to solve a linear system when the variable is in the denominator position (Question 1 of 2) How to solve a linear system when the variable is in the denominator position (Question 1 of 2)
Assume z is a standard normal random variable. What is the value of z if the area to the right ... Assume z is a standard normal random variable. What is the value of z if the area to the right ...
Random distribution of dandelions Random distribution of dandelions
Variable penetrance of mitochondrial mutations Variable penetrance of mitochondrial mutations
Video: Protein catabolism (Krebs cycle) and Protein anabolism (protein synthesis)

For a complete list of videos, visit our video library