The measures of spread include the range, quartiles and the interquartile range, variance and standard deviation. Let's consider each one by one.
<u>Interquartile Range: </u>
Given the Data -> First Quartile = 2, Third Quartile = 5
Interquartile Range = 5 - 2 = 3
<u>Range:</u> 8 - 1 = 7
<u>Variance: </u>
We start by determining the mean,

n = number of numbers in the set
Solving for the sum of squares is a long process, so I will skip over that portion and go right into solving for the variance.

5.3
<u>Standard Deviation</u>
We take the square root of the variance,

2.3
If you are not familiar with variance and standard deviation, just leave it.
Answer:
X is four times less/smaller than Y or Y is four times greater than X
Step-by-step explanation:
Not sure what you are asking to do
Answer:
The answer is 1 
The work is shown on the picture.
Step-by-step explanation: Hope this helps and mark brainliest if ya want :)!
Answer:
$10665,64
Step-by-step explanation:
S=19900*(1-(7,5/100))^8=10665, 64
Answer:
1/2
Step-by-step explanation:
isolate the variable by dividing each side by factors that don't contain the variable