Chemistry Lab #2
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15 Terms
What does this symbol stand for?
sum
In this video, what is "x" show here by the arrow?
#, what the symbol means
90, the mean
In this video, what is "n-1"?
4
What is the average of these numbers?
52.5
What is the standard deviation of this group of numbers?
(nearest 100th)
16.78
True or False
The variance and standard deviation are the exact same.
False
What does “x sub i” stand for?
the size of each person
True or False.
The sample is just part of the entire population. We use this sample because it is really unlikely that we can measure every person in a population.
We will use n in this case of a sample.
False
How many centimeters does the third person deviate from the mean?
15
What is the average deviation from the mean value in this example is ________cm.
12.06
What does the “n” refer to?
number of individuals
What number should be in the denominator?
6
What does this equation represent?
the mean
People that are very small or very tall deviate from the mean _________ than others.
more
What is the standard deviation?
A. None of these.
B. A measure that indicates the average around the mean.
C. A measure that indicates how much data scatter around the mean.
D.A measure that indicates the mean.
C