A teacher surveyed her class after they had taken a vocabulary test. Eighteen of the students claimed they had studied at least one hour for the test. The remaining twelve students admitted that they had not studied for the test at all. The test results (expressed as a percent) for the two groups are shown below. Studied: 88, 100, 94, 79, 92, 100, 95, 83, 89, 99, 100, 91, 89, 95, 100, 93, 96, 84 Did Not Study: 82, 72, 45, 91, 58, 83, 65, 87, 90, 77, 73, 89 1. Calculate the range and interquartile range for each set of data. 2. Using complete sentences, compare the data sets based on your results in part A.

1. studied: range-21

                 interquartile-10

   did not: range-46

                interquartile-19.5

2.The people who studied got closer grades to each other. This shows that those who didn't study had more variation in grades. So there if you don't study you have a bigger chance of failing than studying.

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation: