Super Stats
Equisite Equations
Radical Radicals
Very Variation
Linear Love
100
This is the mean and standard deviation of this data: {97, 92, 100, 68, 72}
What is mean is 85.8 and standard deviation is 13.21
100
This is how you know the solution to an equation is correct.
What is substitute the solution back into the equation for the unknown and get a true statement.
100
This is the value of sqrt(169)
What is 13
100
These are the general form equations for direct variation and inverse variation.
What is y=kx for direct and y=k/x for inverse
100
This is the general form of the slope-intercept form of a linear equation.
What is y=mx+b
200
This statistical word tells us how many standard deviations a datapoint is above or below the mean.
What is z-score
200
This is the solution to 3(x+5)=21, as well as the justification for the first step in solving it.
What is x=2 and the distributive property
200
This is the simplification of sqrt(28)
What is 2sqrt(7)
200
The given equation is an example of this kind of variation, and it has this constant of variation: xy=10
What is inverse variation with a constant of variation of 10
200
This is the slope and y-intercept of the line formed by the equation 10x - 5y = 50
What is slope is 2 and y-intercept is -10
300
This is the mean absolute deviation of the following dataset: {29, 35, 42, 16, 20}
What is 8.32
300
This is the solution to (2/3)x - 7 = 15
What is x=33
300
This is the simplification of sqrt(32/4)
What is 2sqrt(2)
300
(4, 20) is an ordered pair in a direct variation. This is the direct variation equation.
What is y=5x
300
This is the slope of a line formed by these two points: (-2, 5) and (-6, -15)
What is the slope is 5
400
Two car batteries have an average life span of five years. Battery A's lifespan has a standard deviation of 3.6 and battery B's lifespan has a standard deviation of 6.2. This is the battery that will more likely hit its average life span of five years (you have to explain why, too).
What is battery A, because it has a smaller standard deviation.
400
This is the solution to -(x+3)+2x = 4(x+1)-3x
What is this is a trick question - there are no solutions!
400
This is the simplification of 2/sqrt(3)
What is 2sqrt(3)/3
400
Given that x and y vary directly, and x is 100 when y is 25, this is the direct variation equation that describes the situation.
What is y=(1/4)x
400
Two linear equations are given by 6x - 2y=10 and y=3x-9. This is the answer to whether they are parallel or not and why.
What is yes they are parallel because they have the same slope and different y-intercepts.
500
This is the test you did better on relative to the group given this situation: you got a 42 on a Physics test which had a mean of 35 and a standard devation of 3 and a 72 on an English test which had a mean of 61 and a standard deviation of 4 (you have to explain why, too).
What is the English test, because you scored 2.75 standard deviations above the mean (you only scored 2.3 standard deviations above the mean for the Physics test)
500
This is the solution to the proportion (x-1)/5 = 7/15
What is x=10/3
500
This is the simplification of (10sqrt(3))/sqrt(2)
What is 5sqrt(6)
500
A clean up crew can clean up a house in 5 hours with 4 workers. This is how many workers are needed to clean the house in 2 hours.
What are 10 people
500
This is the equation that describes the cost of the following situation: the cost per month of a cell phone if the provider charges $50 a month and $0.05 for every minute
What is y = 0.05x+50 where x is the number of minutes and y is the cost
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