WorksheetsPreCalc Statistics Overview
Total questions: 25
Worksheet time: 3hrs 31mins
Name
Class
Date
1.
The distribution of heights of adult American men is approximately Normal with mean 69 inches and standard deviation 2.5 inches. Between what heights do the middle 95% of men fall?
a)
66.5-71.5
b)
64-74
c)
61.5-76.5
d)
65-73
2.
The distribution of heights of adult American men is approximately Normal with mean 69 inches and standard deviation 2.5 inches. A height of 71.5 inches corresponds to what percentile of adult male American heights?
a)
95th
b)
68th
c)
97.5 (98th)
d)
84th
3.
The proportion of observations from a standard Normal distribution with values less than z = 1.15 is
a)
.1251
b)
.8531
c)
.8749
d)
.8944
4.
The scoring of modern IQ is such that Intelligence Quotients (IQs) have a normal distribution of μ= 100 and 𝞂 = 15.
Mensa International is a non-profit organization that accepts only people with IQ score within the top 2%. What level of IQ qualifies one to be a member of Mensa?
Mensa International is a non-profit organization that accepts only people with IQ score within the top 2%. What level of IQ qualifies one to be a member of Mensa?
a)
115
b)
130.75
c)
145
d)
120
5.
The average waist size for teenage males is 29 inches with a standard deviation of 1.4 inch.
If waist sizes are normally distributed, estimate the proportion of teenagers who will have waist sizes greater than 31 inches?
If waist sizes are normally distributed, estimate the proportion of teenagers who will have waist sizes greater than 31 inches?
a)
92.4%
b)
10.5%
c)
16%
d)
7.6%
6.
If the shaded area under the curve is .85, what is the other missing portion of the curve?
a)
.26
b)
.15
c)
.30
d)
.17
7.
33, 25, 42, 25, 31, 37, 46, 29, 38
What is the third quartile of the data?
What is the third quartile of the data?
a)
37
b)
38
c)
40
d)
46
8.
33, 25, 42, 25, 31, 37, 46, 29, 38
What is the interquartile range of the data?
What is the interquartile range of the data?
a)
8
b)
9
c)
13
d)
21
9.
Identify the outlier for the given data?
23, 34, 27, 7, 30, 26, 28, 31, 34
23, 34, 27, 7, 30, 26, 28, 31, 34
a)
7
b)
23
c)
31
d)
34
10.
What percentage of the data is between 90 and 140?
a)
25 %
b)
50%
c)
75%
d)
100%
11.
What is the IQR of the Car Hops?
a)
4
b)
6
12.
Which number is not the mean, median, mode, or range of the data set:
4, 3, 15, 11, 3, 8, 7, 5?
4, 3, 15, 11, 3, 8, 7, 5?
a)
3
b)
6
c)
12
d)
11
13.
What is the term for the median of the upper half of a data set?
a)
Interquartile Range
b)
First Quartile
c)
Second Quartile
d)
Third Quartile
14.
What is the term for the median of the lower half of a data set?
a)
Interquartile Range
b)
First Quartile
c)
Second Quartile
d)
Third Quartile
15.
a)
The box-and-whisker plot is correct.
b)
The value of Q1 is incorrect.
c)
The median is incorrect.
d)
The value of Q3 is incorrect.
16.
What is true about the mean?
a)
Best measure of center
b)
May not be a value from the data
c)
Used for data with outliers
d)
Appropriate for all quantitative data
17.
_______ is a part of a group being surveyed.
a)
Sample
b)
Population
c)
Random Sample
d)
Quartile
18.
_________ is a sample in which each individual or object in the entire population has an equal chance of being selected.
a)
Sample
b)
Population
c)
Random Sample
d)
Quartile
19.
_______ is the entire group of objects or individuals considered for a survey.
a)
Sample
b)
Population
c)
Random Sample
d)
Quartile
20.
Kim surveys 100 moviegoers that entered the movie theater in the first hour. What type of sampling method is this?
a)
Random
b)
Convenience
c)
Biased
21.
What shape is a normal distribution curve?
a)
Half curve
b)
Round curve
c)
Bell curve
d)
Square curve
22.
A U.S. senator from Maine wants to find out the opinion of the voters in his state on issues concerning education. The office of the senator passes out surveys to every 5th person they meet. What type of sampling is this?
a)
Stratified
b)
Systematic
c)
Random
23.
At a middle school, the 7th graders will conduct a survey for where to go on a field trip. Which method will result in the least biased decision?
a)
to randomly ask 8th grade students who went on a field trip last year
b)
to randomly choose some 7th grade students to select a location
c)
to ask all 7th grade teachers and administrators for a location
d)
to ask the student council to choose a location
24.
Tom surveys 40 moviegoers by randomly choosing their names. What type of sampling method is this?
a)
Random
b)
Convenience
c)
Biased
25.
The manager of a bookstore surveys people who buy mystery novels to see if the store should expand its hours. What is the population?
a)
People who visit the bookstore.
b)
People who buy mystery novels.
c)
Residents of the town
d)
People who like to read.
100 %
