Warm-Up

1
Warm-Up

• You go to the snack bar to buy a bagel and a
  drink for lunch. You can choose from a plain
  bagel, a blueberry bagel, or a raisin bagel. The
  choices for a drink include water or a sports
  drink.
• How many different lunches can you make? Explain
  how you know.
• What is the probability that a randomly chosen
  snack will include a blueberry bagel?

2
Stats Quiz Review

• SWBAT calculate mean, median, and mode
• SWBAT construct and interpret stem and leaf
  diagrams and box and whisker plots
• SWBAT identify the number of combinations using
  the Fundamental Counting Principle and calculate
  simple probabilities

3
Find the mean, median, and mode

• The table below shows the number of inches of
  rain that fell on 14 towns in a 50-mile radius
  during a snow storm.

Town A B C D E F G H I
Rain 5 3 2.5 3 5 3 1.5 7 4
4
Answer

• Mean 3.77
• Median 3
• Mode 3

5
Make a stem and leaf plot of the data

• Time spent studying (min)
• 15, 17, 23, 27, 34, 42, 35, 60, 41, 25, 23

6
Answer

1 5, 7
2 3, 3, 5, 7
3 4, 5
4 1, 2
6 0
7
Find the Quartile points for the ages below.
Year 1987 1988 1989 1990 1991 1992 1993 1994
Actress Age 41 25 80 42 29 33 35 45
8

• Q1 31
• Median 38
• Q3 43.5

9
Make a box and whisker plot for the ages below.
Year 1987 1988 1989 1990 1991 1992 1993 1994
Actress Age 41 25 80 42 29 33 35 45
10
Multiple Choice
Find the range. 4.7 6.3 5.4 3.2 4.9
a. 9.5 b. 9.5 c. 3.1 d. 3.1
11
Multiple Choice
Make a stem-and-leaf plot for the following set
of data. 1.1, 1.3, 1.8, 2.2, 2.6, 2.8, 3.1, 3.8
a. 1 1 1.1 c. 1 0.1 1.01
b. 1 1 1.1 d. 1 8 1.8
12
Multiple Choice

• What would x need to equal in order for the data
  set below to have an average of 130?
• 104, 137, 154, 131, x
• A. 124
• B. 125
• C. 127
• D. 122

13

• A) 0.250 lb B) 0.375 lb C) 0.5 lb D) 1.0
  lb

14

• A) Soprano B) Alto C) Tenor D) Bass

15

• How many outfits can you make from 4 shirts, 3
  pairs of pants, and 2 pairs of shoes?

16

• Information about girls' ice skates
•    Colors  white, beige, pink, yellow, blue  
  Sizes 4, 5, 6, 7, 8   Extras  tassels, striped
  laces, bells
• Assuming that all skates are sold in one color,
  one size, and with one extra, how many possible
  arrangements exist?  

17

• What is the probability that a pair of ice skates
  chosen at random would have bells?

18

•  Burger Queen offers 4 types of burgers, 5 types
  of beverages, and 3 types of desserts.  If a meal
  consists of 1 burger, one beverage and one
  dessert, how many possible meals can be chosen?

19

• Your state issues license plates consisting of
  letters and numbers.  There are 26 letters and
  the letters may be repeated.  There are 10 digits
  and the digits may be repeated. 
• How many possible license plates can be issued
  with two letters followed by three numbers?

20

• What is the probability that a license plate
  chose at random will be AB 123 ?

21
Make a Scatter Plot of the Data Below
Year Average Tuition Public College
1990 2,035
1991 2,159
1992 2,410
1993 2,604
1994 2,820
1995 2,977
22

• Write an equation for the line of best fit for
  the scatter plot in the previous question.

23

• Use the linear model from the previous question
  to determine the average tuition in 2010. Did you
  use linear interpolation or linear extrapolation?

24

• State whether the graph below has positive
  correlation, negative correlation or no
  correlation.