Quiz 2: Averages/Order of Operations

Vocabulary

100

To find the ___________________ you add (+) all of the numbers in a data set together then divide (/) by the amount of data points.

mean

200

To find the ___________________ you order the numbers from least to greatest and find the middle number.

median

300

To find the ___________________ you look for the number that appears the most often.

mode

400

The ______________________ is the difference between the highest and the lowest number in a data set.

range

500

What is the correct order of operations?

Parentheses

Exponents

Multiplication, Division -->

Addition, Subtraction -->

MEAN

100

Find the MEAN of the following data set: 1, 2, 2, 3, 2

2

200

Find the MEAN of the following data set: -1, 1, 1, 3

1

300

In Fairbanks, Alaska, during a particularly cold January week, the daily low temperatures (in degrees Celsius) were recorded. What is the mean?

-35, -40, -35, -50

-40

400

The coldest temperatures in Connecticut for the last 4 years are as follows; –4°F, –10°F, –12°F, –10°F.  What was the average (mean) temperature in Connecticut for the last 4 years?

-6.5

500

There are 5 students in a math class. They took a quiz, and their scores were 78, 85, 92, 88, and 79. What is the mean (average) score of the class?

84.4

MEDIAN/MODE

100

Find the MEDIAN of the following data set: 1, 2, 2, 3, 2

2

200

Find the MEDIAN of the following data set: -1, 1, 1, 3

1

300

In Fairbanks, Alaska, during a particularly cold January week, the daily low temperatures (in degrees Celsius) were recorded. What is the median?

-35, -40, -35, -50

-37.5 degrees

400

What is the mode in the following number set: 1, -3, 4, -5, 5, -4, 4, 

4

500

The coldest temperatures in Connecticut for the last 4 years are as follows; –4°F, –10°F, –12°F, –10°F.  What was the median and mode temperature in Connecticut for the last 4 years?

Median: -10

Mode: -10

Order of Operations

100

What would you do first?

16 – 2 (5 +8) =

(5 + 8)

200

28 - 4 + 3 x 2

What would you do first?

300

3² + (4 x 3)

What would you do first?

400

Solve/show each step: 2² + 5 x (6 + 2)

2² + 5 x (6 + 2)

4 + 5 x (8)

4 + 40

44

500

20 – 5 (3 + 9) =

15 ( 3 + 9)

15 (12)

180

What error was made?

You have to do the () first

Integer Operations

100

-5 + -3 = 

-8

200

9 + - 10=

-1

300

-20 x -4 =

80

400

-12/3

-4

500

Complete the following sentences:

A negative times/divided by a negative is ___________

A negative times/divided by a positive is ___________

A positive times/divided by a negative is ___________

1) Positive

2) Negative

3) Positive