Modeling Data

Find the Upper Quartile (Q3) of the following numbers:

84, 88, 72, 74, 98, 16, 94

• 72

• 88

• 94

• There is no Upper Quartile (Q3)

Find the IQR of the following numbers:

84, 88, 72, 74, 98, 16, 94

• 78

• 22

• 16

• There is no IQR.

Which of the following tells you something about the "spread" of the data in relation to the mean.

• Maximum

• Outlier

• Mean

• Standard Deviation

How does removing an outlier from a data set effect the standard deviation

• Increases

• Decreases

• Stays the same

Adding up all of the numbers in a set and dividing by the number of numbers.

• Mean

• Median

• Mode

• Range

Based on the table, which function can best be used to model this situation?

• h(t) = 99t² + 858

• h(t) = -4.9t² + 295t + 0.6

• h(t) = -4.9t² + 295t + 2

• h(t) = 99t² + 1,470.3

The width of a rectangle varies inversely with its length.  If the width is 6 when the length is 24, give an equation that shows the relationship.

• y = 4x

• y = 144x

• y = 4/x

• y = 144/x

The Height of a wave in California varies directly with the seconds that pass by.  At 4 seconds, the wave is 6 feet high.  How many seconds will give you a wave that is 10 feet high? 

• y = 2/3x

• 6

• 6.6

• 7

y varies directly with the square of x.  If y=40 when x=4, find y when x = 7

• 17.5

• 70

• 122.5

Is the following graph direct, inverse, or neither?

• Direct

• Inverse

• Neither