Chapter Review

TRASHKETBALL!!!!!!

You want to make a stem-and-leaf of the data values 48, 44, 36, 31, 25. What numbers would you use as the stems?

a) 2, 3, and 4 or b) 8, 4, 6, 1, and 5

What are two ways we can represent 4 | 6 from a stem and leaf plot?

4 | 6 = _______ 4 | 6 = ______46 4.6

Make a stem-and-leaf plot with the given data.

10, 12, 15, 14, 20, 22, 27, 31, 36

1

2

3

0 2 4 5

0 2 7

1 6

Key1| 0 = 10

Which value is the upper extreme for the data?

19, 14, 25, 12

_______________25

Upper Extreme is the highest number!

Which value is the lower extreme for the data?

13, 6, 27, 9

_____________6

Lower extreme is the lowest number!

How do you find the inter quartile range?

_________________

Upper Quartile - Lower Quartile

Which city has the bigger range?

A or B

72 -3065-38

40=27=

What percent is lower than 71?

________75%

What is the upper quartile and lower quartile and interquartile range?

UQ = ____ LQ = ____ IQR = ____71 31 40

Tell whether the data are numerical or categorical.

A study determined the preferred method of transportation by college students, such as car, airplane, train, or bus.

__________________Categorical

Tell whether the data are numerical or categorical.

A study was done to find the wingspans (in centimeters) of captured bald eagles.

_______________numerical

The table shows the results of a survey that asked students to name their favorite type of movie. Which is the best display to use to display the data?

Favorite Type of Movie

TypePercent

Drama16%

Comedy45%

Action28%

Sci-Fi8%

Other3%

Circle Graph!!!

A school newspaper is conducting a survey to predict who will win the next school election.

Identify the sampling method.

A. Self-selected B. Stratified C. Random

_______

If the school hung posters and announced if anyone wanted to vote to come to the cafeteria.

A

Is this question biased?

Are you willing to pay higher taxes so that the city can build a new shopping mall, even though the school needs a new building?

YES or NO

unfairly prejudiced for or against someone or something.Biased -

Is this question biased?

Don′t you agree that planting more shade trees will make our beautiful downtown area even better?

___________Yes

What happens when you have two medians left and you are finding your upper quartile and lower quartile?

Include the two medians in the UQ and LQ or disregard them?

________________________

When there are two medians left, you use them to find the UQ and LQ. When there is only one median left, you disregard it.

Make sure you have the correct amount of BINS in each row!!!!!!!!!!!

What percent of songs were played under 11 weeks?

3 + 6 = 99__

31=

31 total songs

29 %x 100

Finding the average of histograms!

Take the middle of each interval, add their quantity and divide by the total number

483 divided by 31

3 + 3 + 3 + 8 + 8 + 8 + 8 + 8 + 8 + 13 + 13 + 13 + 13 + 13 + 13 + 13 + 13 + 13 + 18 + 18 + 23 + 23 + 23 + 23 + 23 + 23 + 23 + 28 + 28 + 28 + 28 =

483

= about 16