Alg1 Before Winter Break - Copy

One-variable Statistics

100

This mathematical term is commonly known as the average.

Mean

200

The middle number is this.

Median

300

What are at least three of the five parts of the five number summary?

Minimum, Q1, Median, Q3, Maximum

400

When the data is skewed, this measure of center is preferred.

Median

500

A histogram with two peaks at opposite ends would be called this.

Bi-modal

Linear Equations

100

Is this line elevating or descending?  

y = 3x + 1

Elevating

200

Is this line elevating or descending?   

y = -4x +1

Descending 

300

Where would this line intersect the y-axis? 

y = 2x - 3

at (0,-3) 

400

y = 5x -8

If x = 3, then y=? 

7

500

y=3x+5

If y=11, then x=?

2

Solving for the Variable

100

x - 7 = 3

x = 10

200

2x + 4 = 12

x = 4

300

 x / 7 = 3

x = 21

400

4(x + 5) = 16

x = -1

500

5( 2(x + 4)) = 40

x = 0

Math Vocab

100

Equivalent Equations

Equations that have the exact same solutions

200

System of Equations

two or more equations that represent the constraints in the same situation

300

Substitution

Replacing a variable with an expression it is equal to 

400

Elimination

a method of solving a system of two equations in two variables where you add or subtract a multiple of one equation to another in order to get an equation with only one of the Variable (thus eliminating the other variable). 

500

Solution to a system of equations 

a coordinate pair that makes both equations in the system true. On a graph, the solution is the point where the lines intersect. 

Grab Bag

100

the two major cities of the Islamic Golden Age were...

Baghdad and Damascus

200

Name two of the capitals of China in history

Xi'an, Luoyang, Nanjing, Beijing

300

Tim has how many cats?

3

400

How do you define a statistical question?

A question that can be asked of a large group that does not have a yes/no answer and has a defined answer set.

500

How many counties has Tim lived in?

3 (US, China, South Korea)