Statistics Test questions
Quadratics
Linear
Line of Best Fit/Linear
midpoint
100
Find the outlier in the set of data.
13, 16, 11, 19, 38, 15, 21, 22
38
100
Solve the quadratic equation: x2−16x+64=0
x=8
100
Which equation is equivalent to y + 2(x + 5) = 4x + 5?
y=2x-5
100
Which equation describes the relationship shown by the set of ordered pairs:
{(-3,17),(-2,12),(1,-3),(4,-18),(5,-23)}?
y=2-5x
100
What is the midpoint of a segment between the points (2 , -3) and (2 , 4)?
(2,1/2)
200
You weigh six packages and find the weights to be 32, 22, 72, 27, 67, and 62 ounces. If you include a package that weighs 152 ounces, which will increase more, the median or the mean?
The median and mean are affected the same amount.
200
Justin threw a football to his friend, and the height of the football in meters above the ground after t seconds is modeled by f(t)=−4.9t2+30t+13. When did the football hit the ground?
6.53
200
What is the value of w in the equation 34w+8=13w−7?
-36 (with margin: 0)
200
The table shows the profits of Karen's newsletter business for the past 6 months. Create a model of the data. If you use th eline of best fit, which is the best prediction of Karen's income at 18 months?
Month123456Profit ($)260 340 480 565 694 836
$2,200
200
( , ) is the midpoint of the segment between the points (1.8,−3.4)and (−0.4,1.4)?
0.7 -1
300
Thirteen bowlers were asked what their score was on their last game. The scores are shown below.
178, 169, 174, 175, 180, 176, 181, 173, 174, 180, 177, 171, 176
Find the range and outlier(s), if any, of the bowlers' scores.
range 12; no outliers
300
A diver is standing on a diving board 16 feet above the pool. He jumps into the air and dives towards the pool given the function d(t)=−16t2+16t+16, where d(t) represents his distance above the pool, and t is time measured in seconds. How long will it take for the diver to enter the pool (hit the water) ? Round to the nearest tenth.
1.6
300
What is the slope of the line containing the points (-9, 2) and (3, 14)?
1 (with margin: 0)
300
For which data set is y=-0.32x+21 the best prediction equation?
(18,16),(26,12),(39,9),(48,5),(53,6),(58,2)
300
What is the midpoint of the segment connecting the points (5 , -1) and (-4 , 0)?
(0.5 , -0.5)
400
A teacher asks her class of 22 students, “What is your age?” Their responses are shown below. (Round to the nearest tenth when necessary)
19, 19, 14, 14, 16, 19, 19, 16, 16, 15, 17, 16, 17, 16, 15, 14, 15, 15, 17, 14, 16, 15
mean:16.1 median:16
400
Which of the following quadratic equations has NO solutions?
y=x^2+3x+6
400
T = 50n +100
400
Which is the equation for the best line of fit for the data? Let x = 0 for 1950, x = 10 for 1960, and so on.
y=4.14x+110
400
The endpoint of a segment is (-10 , -2) and the midpoint of the segment is (0 , 4). What is the other endpoint?
(-10 , 6)
500
Find the value of x + y to the following system of equations.
7
500
A rocket is launched from atop a 75 foot cliff with an initial vertical velocity of 107 feet per second. The height of the rocket t seconds after launch is given by the equation . Graph the equation to find out how long after the rocket is launched it will hit the ground. Estimate your answer to the nearest tenth of a second.
7.3
500
John waited before crossing a busy street
500
Which most accurately describes the data?
From 1950 to 2000, there was an overall growth
500
What is the midpoint of (-3, 7) and (9, -7)?
(3,0)