The different types of cars at a car dealership can be considered this type of data.
Categorical, nominal
100
Solve for y:
2y - 9 = 17
y = 13
100
Identify the slope and y-intercept of the linear equation:
y = -3.2x + 5
gradient = -3.2
slope = 5
100
A study is conducted to compare the amount of food eaten before an exam and the scores received on that exam. What is explanatory and response variable?
The test score depends on the amount of food eaten so response = test scores,
explanatory = amount of food eaten
100
Name all four General Math teachers first and last names
Karen Colasurdo,
Seamus Killeen,
Lianna Beeching,
Suraj Ajjampur,
200
This type of data is useful for organising large amount of data and is usually displayed on histograms or frequency tables. However, it does not provide an exact analysis.
Grouped Data
200
A person runs 'd' km in 't' hours. Identify the two pronumerals as well as units.
d = distance (km)
t = time (hours)
200
Given the points (-3, 2) and (-9, 7), find the slope of the line.
gradient = 5/6
200
A study is conducted to compare the amount of food eaten before an exam and the scores received on that exam. The Pearson's Product moment correlation coefficient was determined to be 0.56. What does this indicate?
A moderate positive linear association.
200
This is where all of Mr. A favourite sports teams come from.
Chicago
300
The following heights were measured for 5 year 11 students.
176cm, 142cm, 185cm, 167cm, 155cm
This is what type of data
Numerical, continuous
300
The volume in a rain tank that gets filled over time can be modeled by the equation:
V = 1.3 + 0.22t
where V = Volume (l) and t = time (hours)
What is the initial volume in the tank?
Volume = 1.3litres.
This would also be the y-intercept if plotted on a Cartesian Plane.
300
Find the x- and y- intercept of the following line:
-x + 2y = 2
xint: (-2, 0)
yint: (0, 2)
300
A study is conducted to compare the amount of food eaten before an exam and the scores received on that exam. The coefficient of determination was found to be 0.31. What does this indicate?
31% of the variation in test scores is related to the variation of the amount of food eaten before the exam.
300
This is Ms. Beeching favourite hobby.
Cosplay
400
What is shape and mean of the following data set?
1, 1, 1, 2, 2, 2, 2, 3, 3, 4, 4, 5, 6, 7, 9
Positively skewed and mean = 3.47 (TWO DECIMAL PLACES)
400
The volume in a rain tank that gets filled over time can be modeled by the equation:
V = 1.3 + 0.22t
where V = Volume (l) and t = time (hours)
A what rate is the tank being filled?
It is increasing 0.22 litres every hour (or 220ml every hour). It is positive as the tank is being filled. This is the gradient/slope/rate of change our line.
400
Plot a the following line:
y = 2x + 2
(Show teacher to receive points)
Teacher determines whether your answer is worthy.
400
A study is conducted to compare the amount of food eaten before an exam and the scores received on that exam. The coefficient of determination was found to be 0.31. What other factors could affect the results? (Must list minimum four)
Type of food being eaten,
Hours studied,
Amount of sleep,
General Mood on the day,
Multiple exams on the same day,
etc
400
Who is the first woman to dump Mr. Killeen?
Sharon Wellington
500
Generate the five number summary for the following data:
3, 5, 5, 7, 8, 9, 9, 9, 10, 11
John sells shirts for $25. The revenue, R, for selling 'n' shirts is represented by the equation
R = 25n.
The cost to make n shirts is represented by the equation
C = 2200 + 3n.
Solve simultaneously to find the break even point.
100 shirts (n = 100) required to cover production cost of $2500.
500
Plot the following two lines and then find the intersection point.
y = x + 1
y = -x - 3
(Show teacher plot for full points)
Intersection point is (-2, -1). Check with teacher about graphs.
500
TWO-PART QUESTION:
A least square regression line was calculated to be:
y = -1.35x + 42.
If y = 30, what is the value of x?
If the domain of the collected data between 0 and 10 (0-10), is the value determined above, interpolated or extrapolated?