1

Graphing and StatisticsNumber Concepts

Introduction to Algebra: Whole Numbers and Decimals

1200 employees

Line Graph, shows change in growth over time

Time Temperature ∘

F

10 a.m. 62

12 noon 65

2 p.m. 68

4 p.m. 70

6 p.m. 66The temperature rose until 4 p.m. and then began to fall. The high temperature was 70 degrees Fahrenheit

A. Consumption was greatest during the first year of introduction.B. Consumption was greatest during the late 1990s.C. Consumption will decrease in the mid-2000s.D. Consumption leveled off from 2005 to 2006.

D

32

A school is having a fund-raiser in which the students sell calendars and raffle tickets. Each calendar costs $12. Each raffle ticket costs $7. If a student sold 7 calendars and 5 raffle tickets, evaluate 7 • 12 + 5 • 7 to find how much money the student should collect.

Heights of Vertical Jumps in inches

13 23 21 20 21 24 18

Mean 20 Median

21Mode21

Range11

(9 + 10 × 2) – 8 + 27 ÷ 32 =

20

3m = 45

m = 15

Write in exponential form.

6 × 6 × 6 × 6

64

What type of graph is most appropriate for comparing the miles of coastline in six states?

State AL FL GA LA MS TX

Miles of Coastline

33 770 101 397 44 367

Bar graph

Evaluate 2x + 5 when x = 7

19

Solve for p.

15 = p2

p = 30

Which graph best displays the data?

15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

X X X X X X X X XX X X X X X X X X X

Time 20 Students Spent Studying Over Two Weeks

123

Stem Leaves

5666779900111122357

Study Time

1 5 = 15

A.Stem and Leaf

B.Line Plot

Hours

B. Line Plot

If the ages of seven people that reached the top of Mt. Everest are 28, 31, 31, 32, 33, 33, and 64, what is the outlier?

64Mean Median Mode

With Outlier

36 32 31 and 33

Without Outlier

31.3 31.5 31 and 33Which measure of central tendency is

most affected by the outlier? Why? Mean increases the most. The 64 does not change the mode, 31 and 33 still occur most. The median or middle is 32 with the outlier and the average of 31 and 32 without the outlier.

Solve for k.

47 + k = 80

k = 33

- 47 - 47

0 33

Solve for y.

7.2 + y = 9.8

y = 2.6

Identify the pattern. Then name the next two terms in the sequence.

275, 250, 225, 200, ___, ___

Subtract 25: 175, 150

Shelby is making snack bags for her friends. She has 30 peppermints and 25 chocolate bars. If each of her friends receives a bag with an equal number of peppermints and an equal number of chocolate bars, how many snack bags can she make? 

5 bags

10, 10, 12, 13, 14, 14, 15, 16

Mode 10 and 14

What is the median of the data?

Median 13.5