Answer:
a) True
Step-by-step explanation:
The given statement is true.
where 
are data points, 
is the mean and n is the number of observations.
The standard deviation express the variation of data from the mean and therefore, have the same unit as the data like lbs, inches, dollars, etc.
Coefficient of variation on the other hand is the ratio of standard deviation and mean. It is also a measure of dispersion but since it is a ratio, the units cancel each other.
Thus, coefficient of variation is dimensionless.
Thus, it is a relative measure.
If you would like to solve the equation 1 2/5 * x = 7, you can calculate this using the following steps:
1 2/5 * x = 7
7/5 * x = 7 /*5/7
x = 7 * 5/7
x = 5
The correct result would be 5.
State A:
21,22,22,23,23,23,24,24,25
minimum = 21
Q1 = 22
Q2(median) = 23
Q3 = 24
maximum = 25
IQR = Q3 - Q1 = 24 - 22 = 2
state B:
20,20,21,22,23,23,24,46,50
minimum = 20
Q1 = (20 + 21)/2 = 20.5
Q2(median) = 23
Q3 = (24 + 46)/2 = 35
maximum = 50
IQR = 35 - 20.5 = 14.5
I do not believe they are symmetrical....I think state B is skewed to the right
Answer:
Step-by-step explanation:
First let us evaluate the value of both the expressions.
a) Hence, Larry's claim that both the expressions are equivalent is wrong.
The evaluation of the expressions have been shown above. The second expression was obtained by swapping the addition and multiplication order and that created the difference.
b) Clearly,
520 > 264
Therefore,
is greater by the expression 
by a value of 520 - 264 = 256.
Answer:
Step-by-step explanation:
We want to solve for b² in
Combine terms containing b²
Factor b² to get:
Divide by a² -2b²
