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Earn +20 ptsQ: What are uncertainties and deviations in measurement?
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What is the word which tells how many standard deviations a measurement is away from mean?
Z-Score.
How many standard deviations is 16.50 from the mean?
How many standard deviations is 16.50 from the mean?
In statistics what shows how far away a measurement is from the mean or average of the set?
The "z-score" is derived by subtracting the population mean from the measurement and dividing by the population standard deviation. It measures how many standard deviations the measurement is above or below the mean. If the population mean and standard deviation are unknown the "t-distribution" can be used instead using the sample mean and sample deviation.
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 does a z-score represent in terms of units?
standard deviations
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