Vocabulary
To find the ___________________ you add (+) all of the numbers in a data set together then divide (/) by the amount of data points.
mean
Find the MEAN of the following data set: 1, 2, 2, 3, 2
2
Find the MEDIAN of the following data set: 1, 2, 2, 3, 2
2
What would you do first?
16 – 2 (5 +8) =
(5 + 8)
-5 + -3 =
-8
To find the ___________________ you order the numbers from least to greatest and find the middle number.
median
Find the MEAN of the following data set: -1, 1, 1, 3
1
Find the MEDIAN of the following data set: -1, 1, 1, 3
1
28 - 4 + 3 x 2
What would you do first?
9 + - 10=
-1
To find the ___________________ you look for the number that appears the most often.
mode
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
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
32 + (4 x 3)
What would you do first?
-20 x -4 =
80
The ______________________ is the difference between the highest and the lowest number in a data set.
range
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
What is the mode in the following number set: 1, -3, 4, -5, 5, -4, 4,
4
Solve/show each step: 22 + 5 x (6 + 2)
22 + 5 x (6 + 2)
4 + 5 x (8)
4 + 40
44
-12/3
-4
What is the correct order of operations?
Parentheses
Exponents
Multiplication, Division -->
Addition, Subtraction -->
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
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
20 – 5 (3 + 9) =
15 ( 3 + 9)
15 (12)
180
What error was made?
You have to do the () first
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