78, 95, 77, 92, 87, 79, 94, 86, 88, 94
Mean:
Median:
Range:
Mean absolute deviation:

The mean is a measure of central tendency, also called the average. It is found as:

Then:

The median is a measure of central tendency. It's the value of the center when the data set is sorted.

If the number of observations is odd the formula is given by:

If the number of observations is even the formula is given by:

Since the number of observations is even, we'll use the second formula. The sorted data set is:

Therefore:

The Range is a measure of dispersion. It tells us by how much the values in the data set are likely to differ from their mean. It's found by subtracting the lowest from the highest value in the data set:

From the data set:

The mean deviation is a measure of dispersion. The formula is given by:

So:

The sorted data set:

So;

So:

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).

true

step-by-step explanation:

intersecting chords are just lines that intersect. so a line is equal to 180 degrees, so when it is intersected by another chord, then it create supplementary angles, and because the lines cross, vertical angels are also formed.