Question
Asked Jan 7, 2020
211 views

When you use the standard deviation as a measure of variation, what is the reference point?

check_circle

Expert Answer

Standard deviation:

The standard deviation indicates by how much each observation differs from a central point represented by the mean. Standard deviation is the square root of the variance. In general, the variance increases with the increase in the distances between the individual observations and the mean of the data set.

The general formula for sample standard deviation is,

Standard deviation s = SQRT(sum of (xix-bar)2/n-1)

Procedure to find standard deviation:

  1. Calc...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Related Statistics Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: Which measure of variation is preferred when a. the mean is used as a measure of center?b. the media...

A: a)Mean:Mean is an important measure of center when the data is quantitative. Mean of a data set is t...

question_answer

Q: In Exercises 5–36, express all probabilities as fractions. Teed Off  When four golfers are about to ...

A: Factorial Rule:The total number of ways n different objects can be arranged where order of the objec...

question_answer

Q: Apply Chebyshev’s rule to solve Exercises. A quantitative data set has size 80. At least how many ob...

A: The size of the data set is 80.

question_answer

Q: Denfine each of the following terms in the context of experimental design. a. Response variableb. Fa...

A: a)Response variable:In an experimental design, the response variable is defined as the variable that...

question_answer

Q: If the condition for using the empirical rule is met, why should that rule be used instead of Chebys...

A: The Chebyshev’s rule will estimate a minimal percentage, whereas the empirical rule gives almost the...

question_answer

Q: b0 = -2, b1 = 3, b2 = -7a. determine whether the plane slopes upward, slopes downward, or is horizon...

A: (a)Direction of the slope of a plane:If the sign of a partial slope is positive, the plane slopes up...

question_answer

Q: Please show all the work. You may need to rotate the photo in order to view the question clearly.

A: Click to see the answer

question_answer

Q: A factorial experiment was designed to test for any significant differences in the time needed to pe...

A: The null and alternative hypotheses for Factor A are stated below:Null hypothesis:There is no signif...

question_answer

Q: Describe the difference between a residual and a standardized residual. Which of these two residuals...

A: Difference between residual and standardized residual is shown below