statistics

Calculate SS, variance, and standard deviation for the following sample of n=9 scores:2,0,0,0,0,2,0,2,0.(Note: The computational formula for SS works best with these scores.)

I keep getting the wrong numbers. Thank You.

1. 👍 0
2. 👎 0
3. 👁 48

1. 👍 0
2. 👎 0
posted by drwls
2. sum of squares
SS=E(x-u)squared in greek of course

1. 👍 0
2. 👎 0
posted by Tracy
3. I get:
u=.66666667
ss=8
v=1
sd=1

Note that I am using the formula for the estimate of the variance from a sample. So, I devide by n-1.

1. 👍 0
2. 👎 0

Similar Questions

1. statistics

Calculate SS, variance, and standard deviation for the following sample of n _ 4 scores: 3, 1, 1, 1. (Note: The computational formula works well with these scores.)

asked by Liz on June 22, 2011
2. stat

In an extensive study involving thousands of British children, Arden and Plomin (2006) found significantly higher variance in the intelligence scores for males than for females. Following are hypothetical data, similar to the

asked by jessie on November 26, 2016
3. stats

Why must you square the deviation scores when computing a standard deviation using the definitional formula? Why is the computational formula easier to use when computing variance and standard deviation?

asked by kelly on February 5, 2013
4. statistics

Calculate SS, variance, and standard deviation for the following population of N _ 7 scores: 8, 1, 4, 3, 5, 3, 4. (Note: The definitional formula works well with these scores.)

asked by Liz on June 22, 2011
5. statistics

In an extensive study involving thousands of British children, Arden and Plomin (2006) found significantly higher variance in the intelligence scores for males than for females. Following are hypothetical data, similar to the

asked by Liz on June 22, 2011
6. Statistics

Check my answers please! Thanks a lot. Five students reported that the previous night they slept: 7,8,7,10,9 hours. Calculate the sample varience and standard deviation. sample varience = 1346.5 standard deviation = 36.7 Consider

asked by Jake on February 1, 2007
7. statistics

A psychologist wants to estimate the variance of employee test scores. A random sample of 18 scores had a sample standard deviation 10.4. Find a 90% confidence 2 interval for the population variance. What assumption, if any, have

asked by Janelle on November 9, 2011
8. STAT

Calculate SP (the sum of products of deviations) for the following scores. Note: Both means are decimal values, so the computational formula works well. X Y 0 2 0 1 1 0 2 1 1 2 0 3 Assume a two-tailed test with  .05. (Note: The

asked by Tracy on March 3, 2013
9. Math

I need help with this these two problem PLEASE!!! For a population with a mean of μ  80 and a standard deviation of   12, find the z-score corresponding to each of the following samples. a. M  83 for a sample of n  4 scores

asked by Tracy on February 1, 2013
10. Quantitative Analysis

The "standard deviation of the sample score" divided by the "square root of the sample size" is the formula for computing the ...? A. Coefficiant of Determination B. Absolute Deviation C. Variance D. Standard Error

asked by Stacie on November 6, 2013

More Similar Questions