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Earn +20 ptsQ: What does chi-square equals 0 mean?
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How many significant figures are in 2.010?
When to the left of the decimal point, zeros mean nothing: 2010 has 3 sig figs (counting 201 as individual numbers 2, 0, and 1 which equals 3). When to the right, they do mean something: 0.0045 has 4 sig figs (counting 0045 as individual numbers 0, 0, 4, and 5 which equals 4).
What is the area under standard normal distribution curve between z equals 0 and z equals 2.16?
0.4846
What is the horizontal asymptote of y equals 2 to the power of x?
It is y = 0
If mean equals 18.6 standard deviation equals 4 what is the z score?
The z score, for a value y, is (y - 18.6)/4
Why do deviation in a data set sum to zero?
They don't necessarily. Deviations from the median in an asymmetric data set will not sum to 0. The mean is the sum of observations divided by the number of observations and some simple algebra will show that the sum of deviations from this equals 0. Unfortunately, the browser used by this site is useless for showing such work.
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