Solving Equations
Solve for m: -2m=24
m=-12
Solve this inequality for x: 2x >12
x>6
Multiply these polynomials: 3x(x-5)
3x^2-15x
What is the mean of the following set of data to the nearest tenth:
10, 12, 13, 16, 19, 39
18.2
Which situation represents causal relationship?
a) The longer your hair, the bigger your shoe size.
b) The further you live from school, the more miles you drive.
c) The more teachers you have, the quicker you do your H/W.
b)
Solve this inequality for b: b+8>-20
b>-28
Evaluate the following expression:
2x - 5y when x = 4 and y = 2
-2
Is there an outlier in the following set of data and what is it?
10, 12, 13, 16, 19, 39
Yes, it is 39
What percent of the data is between the minimum and the first quartile?
25%
Solve for m: 4-m=16
m=-12
Solve this inequality for y: -2y-4>2
y<-3
Multiply these binomials: (3x-4)(2x+1)
6x^2-5x-4
When there is an outlier or the data is skewed, which is a better measure to use - mean or median?
Median
If the points are scattered all over on a Scatter Plot, this means there is a:
a) Linear correlation
b) Quadratic correlation
c) No correlation
c) No correlation
Solve for x: 3(x+2)=30
x=8
What is the Interval Notation for:
x>-3 and x<5
(-3,5)
What is the range for the following set of data:
10, 12, 13, 16, 19, 39
39 - 10 = 29
True or False: If the data on a Residual Plot is scattered, a linear model represents the best fit.
True
Solve for m:
-4(m-5)+8=40
m=-3
What is the interval notation for:
x<2 or x>7
(-infinity, 2) U (7, infinity)
What is the Interquartile Range for the following set of data?
10, 12, 13, 16, 19, 39
IQR = Q3 - Q1 = 19 - 12 = 7
Which represents the strongest correlation?
a) r = .87
b) r = .03
c) r = -.94
d) r = -.5
c) -.94