Calculate the range and the standard deviation

Assignment Help Applied Statistics
Reference no: EM13707849

1. One sample has a mean of M=4 and a second sample has a mean of M=9. The two samples are combined into a single set of scores.
a. What is the mean for the combined set if the first sample has n=4 scores and the second sample has n=6?
b. What is the mean for the combined set if the first sample has n=6 scores and the second sample has n=4?

2. For the following population of N = 8 scores: 1, 6, 1, 1, 1

a. Calculate the range and the standard deviation. (Use either definition for the range)
b. Add 2 points to each score and compute the range and the standard deviation again. Describe how adding a constant to each score influences measures of variability.

3. After 2 points have been added to every score in a sample, the mean is found to be M=75 and the standard deviation is s=4. What were the values for the mean and standard deviation for the original sample?
b. After every score in a sample has been multiplied by 2, the mean is found to be M=40 and the standard deviation is s=6. What were the values for mean and standard deviation for the original sample?

4. Calculate the SS, variance, and standard deviation for the following sample of n=6 scores: 6, 4, 6, 5, 4, 5 (Note: The computational formula for SS works well with these scores.)

5. Calculate the SS, variance, and standard deviation for the following population of N=8 scores: 8, 7, 7, 9, 8, 7, 9, 9 (Note: The computational formula for SS works well with these scores.)

Reference no: EM13707849

Finding a statistically significant relationship increases

Explain the relationship between sample size and the likelihood of a statistically significant difference between measured values of two groups. In other words, explain wh

The center on budget and policy priorities article

According to the Center on Budget and Policy Priorities article "Curbing Flexible Spending Accounts Could Help Pay for Health Care Reform" (revised June 10, 2009), flexible sp

The same monitoring of radio collared lions over the years s

The same monitoring of radio-collared lions over the years suggests that the overall proportion of stalks that are the crouching type is about 0.87. Do the data above provide

A positive linear relationship between the dollar amount

An insurance company suspects that there is a positive linear relationship between the dollar amount of fire damage in residential fires, and the distance between the resi

A randon sample of monthly gasoline bills for a company''

A randon sample of monthly gasoline bills for a company's 15 sales persons are:$216-254-247-257-231-265-221-226-228-252-235-265-272-285-266. what is the mean? what is the medi

What are the expected annual demand and the total revenue

Calculate the mathematical equation for the total revenue (TR), which is the annual demand multiplied by the unit price. What are the expected annual demand and the total reve

Create a scenario using appropriate formatting

In a minimum of 500 words create a scenario using appropriate formatting and verbiage for a college-level paper. In your essay, include consideration of the key elements

Find the probability that the yearly return obtained

Find the probability that the yearly return obtained by investing in common stocks will be higher than the maximum yearly return that might be obtained by investing in tax-f

Reviews

Write a Review

 
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd