The following table provides a probability distribution for the random variable x
.
()10.220.25−140.37
x 1 2 −1 4 f(x) 0.2 0.25 0.37
Find (≤1)
P
(
x
≤
1
)
. Answer
Find ()
V
a
r
(
x
)
3.3
3.3
1.82
1.82
6.38
6.38
2.53
2.53
6.3
6.3
2.51
2.51

Write each expression in exponential form and find its value.| ! 2 x 2 x 2 x 2

A6 ounce bottle of dressing costs $1.56 a 14 ounce bottle costs $3.36 a 20 ounce bottle costs $5.60 which has the lowest cost per ounce

The stem-and-leaf plot shows the heights in centimeters of teddy bear sunflowers grown in two different types of soil. soil a soil b 5 9 5 2 1 1 6 3 9 5 1 0 7 0 2 3 6 7 8 2 1 8 3 0 9 key: 9|6 means 69 key: 5|8 means 58 calculate the mean of each data set. calculate the mean absolute deviation (mad) of each data set. which set is more variable? how do you know?