Stats
What do you call a data point that doesn't fit in with the rest of the data?
An Outlier
What is the equation for a line in slope-intercept form?
y = mx + b
Which of the following is NOT a way to solve a system.
Graphing
Substitution
Addition/Elimination
Fill in the blank
Matrices
Fill in the blank
Solve:
4x² + 64 = 0
x = 4i , x = -4i
When a constant is added to a set of data, the _____________ does NOT change.
Shape
Spread
Standard Deviation
Range
IQR
Find the slope.
(1, -5), (1, 2)
Undefined
Which is a solution to the system?
3x + y = 3 and 4x + 3y = -1
(-2, -1) or (2, -3) or (1, -4)
(2, -3)
-x² - 2x - 6
(-1, -5)
When data is skewed right, the mean is ____________ the median.
Greater than.
Write this equation in slope-intercept form.
6x - 4y = 12
y = 3/2 x - 3
Solve the System.
3x + 5y = 5
2x - 3y = 16
(5, -2)
Solve by factoring:
x² + 12x = 45
x = -15, x = 3
Find the Z-score for 95 if the mean is 75 and the standard deviation is 10.
2
The graph of the inequality y > 2x + 6
has a __________ line and
has shading __________ the line.
dotted/dashed
above
Multiply the matrices together
[2 -3 [ 4 2
-1 0 -1 1]
-2 4]
[11 -1
-4 -2
-12 0]
Find the discriminant:
3x² - 24x - 48 = 0
600
A normal distribution has a mean of 76 and a standard deviation of 9.
Find P ( 91 < x < 100 )
0.4837
Find the equation of the best-fitting line.
x: -2, -1, 0, 1, 2, 3, 4, 5
y: 4, 3, 2.5, 2, 0.5, -1, -2, -3
y = -x + 2.3
Solve
2x + y + 3z = 5
-x + 3y + z = -14
3x - y - 2z = 11
Write in vertex form:
y = x² - 8x + 13
y = (x - 4)² - 3