Posted by Anonymous on Sunday, November 10, 2013 at 12:10pm.
Using the data in the table, calculate the mean, range, variance, and standard deviation, and then answer questions e and f. Round the variance and standard deviation to one decimal place.
a. Mean
b. Range
c. Variance
d. Standard deviation
e. What value is affecting the mean and SD of this distribution?
f. Does the mean adequately represent this distribution? If not, what would be a better measure of central tendency for this data set?
Pts LOS
1 1
2 3
3 5
4 3
5 2
6 29
7 3
8 4
9 2
10 1
11 2
Total 55

math  PsyDAG, Monday, November 11, 2013 at 3:02pm
Find the mean first = sum of scores/number of scores.
Range = highest score  lowest score.
Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.
Standard deviation = square root of variance.
The mean acts like a fulcrum (balance point), therefore it is greatly modified by outlying scores (e.g., 29). If this is true, which of the remaining measures of central tendency would you use?
I'll let you do the calculations.
Answer This Question
Related Questions
 math  Using the data in the table, calculate the mean, range, variance, and ...
 math  Using the data in the table, calculate the mean, range, variance, and ...
 Statistics  The table below shows the LOS for a sample of 11 discharged ...
 Statistics  The table below shows the LOS for a sample of 11 discharged ...
 college math  20. Calculate the range, variance, and standard deviation of the ...
 Math 157  I am having some trouble figuring out these two problems. 1. ...
 statistics  Would someone mind checking me and pointing out which may be ...
 Statistics  Check my answers please! Thanks a lot. Five students reported that ...
 Math Statistics  In general, what is the relationship between the standard ...
 Statistics Range, Variance, and Standard Deviation  26. Flight Data: Find the ...
More Related Questions