Question 1 (5 points)
Correlation implies causation.

Question 1 options:
True
False
Question 2 (5 points)
A correlation between two variables means...

Question 2 options:

that both variables are always equal


that there is no relationship between the variables


that a change in one variable is matched by a change in the other variable


there is something wrong with the data

Question 3 (5 points)
A negative correlation between two variables means...

Question 3 options:

both variables are decreasing


both variables are increasing


there is no correlation


when one variable goes up, the other goes down

Question 4 (5 points)
A strong linear correlation means...

Question 4 options:

both variables are increasing


the graph of data points stay close to a line


there is a wide spread in the data

Question 5 (5 points)
Standard deviation is a measure of...

Question 5 options:

how linear data is.


the spread of data.


the difference between the greatest and the lowest values.

Question 6 (5 points)
The formula for standard deviation uses which average?

Question 6 options:

mean


median


mode


zero

Question 7 (5 points)
According the the fundamental counting principal for multiplication, if event A has m possible outcomes and event B has n possible, then even A followed by event B has...

Question 7 options:

m + n outcomes


m - n outcomes


m x n outcomes


m / n outcomes

Question 8 (5 points)
What is the value of 4! ("four factorial")

Question 8 options:

4


16


10


24

Question 9 (5 points)
If the probability of passing an exam is 80%, what is the probability of not passing it?

Question 9 options:

80%


50%


100%


20%

Question 10 (5 points)
Given that when flipping a coin, there is 1/2 chance of getting a heads:

What is the probability of flipping a coin and getting heads twice in a row?

Question 10 options:

1


1/2


1/4


1/2