2 1/4+1/2(h+3/4) simplify
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To solve the negative exponents , we have to apply the negative exponent rule or the fractional exponent rule.
<h3>How are negative exponent calculated?</h3>To calculate the negative exponent we need to remember about the negative exponent that the base is on the opposite side of the fraction. Here , We need to flip the fraction so that the base will be on the other side.
Negative exponent Rule :-
Now , we will solve a fraction with negative exponent
For example ; Simplify the fraction
Solution :
= 9
Here, 9 is the answer of the above example.
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0.64 or 64% of the variance for the y scores is predicted by its relationship with x.
<h3>What is coefficient of determination?</h3>The percentage of the variation in the dependent variable that can be predicted from the independent variable is known as the coefficient of determination, abbreviated R2 or r2, in statistics.
<h3>How to find the variance for the y scores?</h3>given that
A set of n = 25 pairs of scores (x and y values) has a pearson correlation of r = 0.80.
now we have to find the variance for the y scores.
here, r=0.80 then
which means 0.64 or 64% of the variance for the y scores is predicted by its relationship with x.
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