#1

Find the mean, median and mode

12, 16, 22, 45, 30, 58, 11, 21, 29, 37

#2

Make a Box and Whisker Plot

12, 73, 11, 96, 45, 21, 16, 98, 13

410 people in the state of Oregon were surveyed about their choice for official state animal. Review the results. Do we have convincing evidence that one of these two animals would win a state-wide

election?

SURVEY RESULTS:

Moose: 234Deer: 176

#3

#4 Find the IQR and identify any possible

outliers15, 57, 77, 66, 53, 72, 51, 88, 82, 70, 112, 107, 69, 88,

155, 98, 65

Read the following survey summaries. Discuss which of the surveys contain bias, and consider

ways to rewrite either survey.• To measure people’s interest in spending tax

dollars to build a community pool in Horsham, people are invited to participate in an online survey.

• To determine if Hatboro residents are interested in building a Monorail over York road, 200 residents are randomly selected, and a pollster sent to their house.

#5

#6

Find the standard deviation

and the mean 52, 61, 54, 48, 72

Can you determine a group of 5 numbers that has the following characteristics?

• The mean is 54• The mode is 56• The range is 6• The median is 55

#7

#8

Find the class meanScore Freq

50-59 260-69 370-79 780-89 590-99 3

#9

Make a Box and Whisker Plot

22, 50, 78, 22, 77, 93, 27, 86, 14

The times in which students at HH can hold their breath are normally distributed, with mean 90 seconds, and standard deviation 15 seconds.

Out of 1900 students, About how many students can hold their breath for more than 1 minute?

#10

A student used the set of data and table below to compute a standard deviation. Can you spot the mistakes she made? The mean of the data set is

31, and the median is 30.

x

27 3 9

28 2 4

29 1 1

31 1 1

35 5 25

36 6 36

2( )x xx x From my table, I found that the variance of this data is 76, and the standard deviation is 8.7

#11

#12 In a poll of 435 HH students, 275 of them

said they approve of the no iPod rule. Find the sample proportion, the margin of error and the

true interval.

#13

What type of survey is taken by ordering

the population in some way and then selecting members at regular intervals?

#14Identify the bias in this survey:

Mr. Evans wants to know how many

students will go to the Dec. Dance, so he talks

to students in the library 4th period.

#15

In a survey of 400 people, 212 say they would be in

favor of raising taxes to pay for a new library, while 184 say they would not. Is this

enough evidence to say that the general public will

support the library?

#16 What type of survey is this:

To determine the theme for the winter dance, the student council divides the school into the four grade levels, and then randomly selects 20

people from each grade level.

#17 The scores to Mr. L’s final exam are normally

distributed, with a mean score of 85, and a standard

deviation of 2 points. About what percentage of the

students have scores above 89? About what percentage have scores between 81 and

87?

#18

On a box of cereal, the weight is listed as 12

ounces and the manufacturer has

determined the standard deviation is 0.1 ounces.

How many boxes of cereal out of 5000 will be within 0.1 ounces of 12 ounces?

#19

On a test, the mean score was an 80 with a standard

deviation of 10.What is the probability of

getting a score greater than 86?

#20

On a test, the mean score was an 80 with a standard

deviation of 10.What is the probability of

getting a score between 76 and 88?

#21

On a test, the mean score was an 80 with a standard

deviation of 10.If 300 people took the test, about how many should be expected to make below a

68?

The box and whisker compares the amount of money spent by males and females at their last

visit to the hair salon. Write a few sentences which compare the spending of the two genders

Males:Mean: $16

Std. Dev: $3

Females:Mean: 27

Std. Dev: $4.50

Ge

nd

er

FM

HairCost10 15 20 25 30 35 40 45 50

Collection 1 Box Plot

#22

#23

Use class mean to estimate the mean height of Black Cherry Trees.

#24

Write comparative statements for the side by side box & whisker.