0
Square the standard deviations, subtract/add them and calculate the square root of the subtraction/sum.
StDV=sqrt (StDvA^2+StDvB^2)
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What is the sum of the deviations from the mean?
The sum of standard deviations from the mean is the error.
In a standard normal distribution 95 percent of the data is within plus standard deviations of the mean?
95% is within 2 standard deviations of the mean.
What is the standard deviation for Wechsler intelligence for children?
The mean for the WISC, like the WAIS, is 100. The deviations from 100, or standard deviations, are 15.
What is 2 standard deviations?
2 times the standard deviation!
This tells how many standard deviations a measurement is away from the mean?
Z-Score tells how many standard deviations a measurement is away from the mean.
How many standard deviations is 16.50 from the mean?
How many standard deviations is 16.50 from the mean?
What is the sum of the deviations from the mean?
The sum of standard deviations from the mean is the error.
What does normality mean in health and social care?
All minor deviations occurring with two standard deviations under the Gaussian curve are considered normal. Deviations occurring outside of two standard deviations are considered abnormal.
In a standard normal distribution 95 percent of the data is within plus standard deviations of the mean?
95% is within 2 standard deviations of the mean.
What is the standard deviation for Wechsler intelligence for children?
The mean for the WISC, like the WAIS, is 100. The deviations from 100, or standard deviations, are 15.
I have two data sets with the same number of values with means x1 and x2 and standard deviations of n1 and n2. How do you average means with standard deviations?
You can't average means with standard deviations. What are you trying to do with the two sets of data?
What is 2 standard deviations?
2 times the standard deviation!
What does STD devs stand for?
standard deviations
How many standard deviations is 19 from the mean?
That depends on what the standard deviation is.
This tells how many standard deviations a measurement is away from the mean?
Z-Score tells how many standard deviations a measurement is away from the mean.
What percentage of a normal distribution is within 2 standard deviations of the mean?
I believe the standard deviations are measured from the median, not the mean.1 Standard Deviation is 34% each side of median, so that is 68% total.2 Standard Deviations is 48% each side of median, so that is 96% total.
How many standard deviations is 99?
You cannot have a standard deviation for 1 number.
