Rules for Means
Let Sx= cfw_1,3. The mean of Sx is 2.
Now, multiply each element in the
set by 7, and then add 5, producing
the set
S7x+5 =cfw_12,26
The mean of S7x+5 is 19 = 7(2) + 5.
mean(S7x+5 ) =7mean(Sx) +5
Rule #1:
ax +b = a X + b
Now Let Sy = cfw_5
Five Number Summary
The "five number summary", or five statistical summary", consists of
(1) the minimum, (2) the maximum, (3) the median, (4) the first quartile and (5) the third
quartile.
Find the "five number summary" for the data set
cfw_85, 100, 97,
Statistics Tutorial: Variables
In statistics, a variable has two defining characteristics:
A variable is an attribute that describes a person, place, thing, or idea.
The value of the variable can "vary" from one entity to another.
For example, a person's