Statistics Midterm Review Question Preview (ID: 53904)


Statistics Basics. TEACHERS: click here for quick copy question ID numbers.

Find the mean: 3, 5, 6, 11, 11
a) 5.1
b) 6.4
c) 7.2
d) 8.3

Find the quartiles: 3, 5, 6, 11, 11
a) Q1=4, Q2=6, Q3=11
b) Q1=5, Q2=6, Q3=8
c) Q1=3, Q2=5, Q3=11
d) Q1=2, Q2=6, Q3=12

In a bag of marbles, there are 4 red marbles, 6 blue marbles, and 2 yellow marbles. What is the probability of choosing a yellow marble?
a) 0.83
b) 0.67
c) 0.25
d) 0.17

Does choosing a 4-digit PIN involve a combination or permutation?
a) combination
b) permutation
c) neither
d) idk

How many different ways can you choose a 4-digit PIN?
a) 40
b) 210
c) 5040
d) 8300

Let X = number of die rolls it takes to roll a 6. Is X a binomial variable?
a) yes
b) no
c) not enough information
d) what's a binomial variable?

Let X = number of die rolls it takes to roll a 6. Is X a geometric variable?
a) yes
b) no
c) not enough information
d) what's a geometric variable?

A set of data with a mean of 17 and standard deviation of 2 is normally distributed. What two values do 99.7% of the data lie between?
a) 15-19
b) 13-21
c) 11-23
d) 9-25

A set of data with a mean of 17 and standard deviation of 2 is normally distributed. Find the z-score for 20.
a) -2.5
b) -1.5
c) 1.5
d) 2.5

A set of data with a mean of 17 and standard deviation of 2 is normally distributed. Find the z-score for 12.
a) -2.5
b) -1.5
c) 1.5
d) 2.5

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