Statistics
What is the definition of Quantative Data?
Measuring or measured through the quantity of something
Solve for the Missing Variable
21/15=T/20
T = 28
What is the next figure in this sequence?
Picture
What is the domain and range in a function?
Domain: Set of all inputs in a relation
Range: Set of all outputs in a relation
What is a system of equations?
A set of two or more equations that have the same variables.
Which Quadrant is (-3,2) in?
Quadrant 2
Solve for the Missing Variable:
220/33 = 60/W
W = 9
Using this sequence, what would the 10th term be?
-9.1, -8.3, -7.5...
-1.9
What is a function?
A relation in which every input has exactly one output.
Write the following as a system of equations:
There are 44 students in the class. There are three times as many girls as boys in the class.
g + b = 44
g = 3b
What all is included in the 5 number summary?
Minimum, Maximum, Q1, Q3, and Median
What is the Inverse Variation equation?
y = k/x
What is a recursive rule?
A sequence with a starting number and a rule that can be used to find subsequent values
Is the following data a function? How do you know?
(-2,-3) , (-1,-5) , (1,-1) , (1,-3) , (2, -10)
Not a function, the input '1' has two outputs.
Is this a solution to this system of equations:
(2,-11)
y = 12x - 35
y = 5 - 8x
Yes
Find the 5 number summary of this data set:
1, 1, 4, 16, 15, 7, 8, 9, 12, 21, 19, 6, 15
Min: 1
Q1: 5
Median: 9
Q3: 15.5
Max: 21
What is a variable?
A number that has no set value, usually denoted by a letter.
Write the starting number and the operation needed to get subsequent terms.
27, 9, 3...
Start: 27
Change: Divide by 3
Is this a function: y2 = x ?
Not a function
What are the three strategies for solving systems of equations?
Substitution, Elimination, Transitive
What is Standard Deviation and what does it do?
A measure of how tightly packed data is.
Standard Deviation allows us to check for outliers in data.
Leaf Cutter ants are about 1.27 cm long and take strides that are 0.84 cm long. How long of strides does a student take if they were proportionally equivalent and 1.65 meters tall?
1.0913 meters
Write an equation in intercept form using this data
(0,25) , (4,85) , (6,115)
y = 15x + 25
Could an inequality possibly be a function?
Yes
Give an example of a system of equations that would fit each strategy to solve them? There should be three different systems, one for each strategy.
Answers may vary