Quiz about Statistics & Probability Fun Quiz

Question 1

The shelf life of a particular bakery product is assumed to be a normally distributed with a mean of 15 days and a standard deviation of 3 days.

Accepted Answer

d. 34.13%

Answer

16. About what percent of the products last between 12 and 15 days?

Answer

a. 32.13%

Answer

b. 30.13%

Answer

c. 31.13%

Question 2

The shelf life of a particular bakery product is assumed to be a normally distributed with a mean of 15 days and a standard deviation of 3 days.

About what percent of the products last between 9 and 15 days?

Accepted Answer

a. 47.72%

Answer

b. 45.72%

Answer

c. 44.72%

Answer

d. 48.72%

Question 3

The shelf life of a particular bakery product is assumed to be a normally distributed with a mean of 15 days and a standard deviation of 3 days.

About what percent of the products last 6 days or less?

Accepted Answer

d. 0.13%

Answer

a. 1.13%

Answer

b. 2.13%

Answer

c. 3.13%

Question 4

The shelf life of a particular bakery product is assumed to be a normally distributed with a mean of 15 days and a standard deviation of 3 days.

About what percent of the products last 10 or more days?

Accepted Answer

d. 95.25%

Answer

a. 91.25%

Answer

b. 92.25%

Answer

c. 93.25%

Question 5

Which of the following employs simple random sampling?

Accepted Answer

b. Drawing names randomly from a covered box

Answer

a. Picking a house randomly and then picking 5 more on the same street

Answer

c. Selecting every 10th person that you see

Answer

d. Picking a random location on a map and then the nearest two houses are chosen

Question 6

A teacher divides her classroom into juniors and seniors. In each group, she divides her students into boys and girls. From each of these four new groups, she picks one student randomly. What type of sampling method does she use?

Accepted Answer

c. Stratified random sampling

Answer

a. Cluster sampling

Answer

b. Multistage sampling

Answer

d. Systematic random sampling

Question 7

Cluster sampling, stratified sampling, and systematic sampling are types of what kind of sampling method?

Accepted Answer

c. Random sampling

Answer

a. Indirect sampling

Answer

b. Direct sampling

Answer

d. Non random sampling

Question 8

This is a type of sampling where each element of the population has an equal chance of being included in the sample.

Accepted Answer

d. Simple random sampling

Answer

a. Irregular sampling

Answer

b. Error free sampling

Answer

c. Cluster sampling

Question 9

Interviewing all members of a given population is called a/an _____.

Accepted Answer

b. Census

Answer

a. Sample

Answer

c. Audit

Answer

d. Experiment

Question 10

If a researcher selected ten schools at random and then interviewed each of the teachers in those schools, the researcher used what kind of sampling method?

Accepted Answer

c. Cluster random sampling

Answer

a. Simple random sampling

Answer

b. Stratified random sampling

Answer

d. Two-stage random sampling

Question 11

A researcher who wanted to determine the benefits of using a new study technique to Statistics students obtained permission from a school district to select 50 senior high school students as participants. The researcher selected 50 senior high school students at random. The researcher selected 25 of them to participate in the new study program. The researcher gave a training session on traditional study techniques to the other 25 students and asked them to use these methods.

Who is the target population in this study?

Accepted Answer

b. All students in the district

Answer

a. Statistics students in the district

Answer

c. All Statistics students

Answer

d. The 25 students who learned the new study techniques

Question 12

A researcher who wanted to determine the benefits of using a new study technique to Statistics students obtained permission from a school district to select 50 senior high school students as participants. The researcher selected 50 senior high school students at random. The researcher selected 25 of them to participate in the new study program. The researcher gave a training session on traditional study techniques to the other 25 students and asked them to use these methods.

What method of sampling is used in the study?

Accepted Answer

b. Stratified random sampling

Answer

a. Simple random sampling

Answer

c. Cluster sampling

Answer

d. Convenience sampling

Question 13

How is stratified sampling carried out?

Accepted Answer

a. Divide the population into homogenous groups and proportionally select random sample from each group.

Answer

b. Systematically choose samples by getting, say, every 8th entry in a list.

Answer

c. Divide the population into groups and select all members of a random group as samples.

Answer

d. Assign numbers to each member of the population then randomly select numbers

Question 14

Which is an advantage of using simple random sampling?

Accepted Answer

a. It eliminates risk of getting biased respondents.

Answer

b. It is easy to use and likely represents the population

Answer

c. It is the easiest to use if the target population is spread out in a large geographical area.

Answer

d. It has been established in the courts to be superior to stratified random sampling.

Question 15

A certain public high school has 2000 students. The principal wants to obtain information from parents regarding school homework policies.

30. The principal takes a numbered list of all students in the school and randomly selects samples whose parents will participate. Which sampling technique does this illustrate?

Accepted Answer

b. Simple Random

Answer

a. Systematic

Answer

c. Cluster

Answer

d. Stratified

Question 16

A certain public high school has 2000 students. The principal wants to obtain information from parents regarding school homework policies.

30. The principal takes a numbered list of all students in the school and randomly selects samples whose parents will participate. The principal wants to be sure she has a proportionate sample of parents based on the grade level of the students. Which sampling method should she consider using?

Accepted Answer

d. Stratified

Answer

a. Systematic

Answer

b. Simple Random

Answer

c. Cluster

Question 17

A certain public high school has 2000 students. The principal wants to obtain information from parents regarding school homework policies.

30. The principal takes a numbered list of all students in the school and randomly selects samples whose parents will participate. The principal wants to be sure she has a proportionate sample of parents based on the grade level of the students. The target population in her study are ____.

Accepted Answer

b. Parents of students in the school

Answer

a. Students in the school

Answer

c. Elementary school pupils in the district

Answer

d. Parents of elementary school pupils in the district

Question 18

Identify the sampling technique illustrated in the statement

Every 8th person boarding a plane is searched thoroughly.

Accepted Answer

1-in-k Systematic

Answer

Cluster

Answer

Simple Random

Answer

Stratified

Answer

Multistage

Question 19

Identify the sampling technique illustrated in the statement

At a university, five math classes are randomly selected out of 15 and all of the students from each class are interviewed.

Accepted Answer

Cluster

Answer

Simple Random

Answer

Stratified

Answer

1-in-k Systematic

Answer

Multistage

Question 20

Identify the sampling technique illustrated in the statement

A researcher randomly selects and interviews thirty male and thirty female teachers.

Accepted Answer

Simple Random

Answer

Cluster

Answer

Stratified

Answer

1-in-k Systematic

Answer

Multistage

Question 21

Identify the sampling technique illustrated in the statement

A researcher for an airline interviews all of the passengers on ten randomly selected flights.

Accepted Answer

Cluster

Answer

Simple Random

Answer

Stratified

Answer

1-in-k Systematic

Answer

Multistage

Question 22

Identify the sampling technique illustrated in the statement.

A college student interviews everyone in a Mathematics class to determine the percentage of students that live in a dormitory

Accepted Answer

Cluster

Answer

Simple Random

Answer

Stratified

Answer

1-in-k Systematic

Answer

Multistage

Question 23

Identify the sampling technique illustrated in the statement.

A market researcher randomly selects 100 drivers under 35 years of age and 50 drivers over 35 years of age.

Accepted Answer

Stratified

Answer

Cluster

Answer

Simple Random

Answer

1-in-k Systematic

Answer

Multistage

Question 24

Identify the sampling technique illustrated in the statement.

All of the teachers from 100 randomly selected senior high schools are interviewed.

Accepted Answer

Cluster

Answer

Simple Random

Answer

Stratified

Answer

1-in-k Systematic

Answer

Multistage

Question 25

Identify the sampling technique illustrated in the statement.

To avoid working late, the quality control manager examines the last 20 items produced that day.

Accepted Answer

1-in-k Systematic

Answer

Cluster

Answer

Simple Random

Answer

Stratified

Answer

Multistage

Question 26

Identify the sampling technique illustrated in the statement.

The names of 50 contestants are written on 50 cards. The cards are placed in a bag then three names are picked from the bag.

Accepted Answer

Simple Random

Answer

Cluster

Answer

Stratified

Answer

1-in-k Systematic

Answer

Multistage

Question 27

TRUE if the statement is correct, and FALSE if otherwise.

The percentile rank for the mean is 50% for any normal distribution.

Accepted Answer

True

Answer

False

Question 28

TRUE if the statement is correct, and FALSE if otherwise.

A standard normal distribution has a mean of 1 and a standard deviation of 1.

Accepted Answer

True

Answer

False

Question 29

TRUE if the statement is correct, and FALSE if otherwise.

Sampling can be done when it would be impractical to survey the entire population.

Accepted Answer

True

Answer

False

Question 30

TRUE if the statement is correct, and FALSE if otherwise.

The group surveyed when the survey is not administered to all members of the population is called a sample.

Accepted Answer

True

Answer

False

Question 31

TRUE if the statement is correct, and FALSE if otherwise.

Simple random sampling involves creating subgroups of the entire population, usually based on the geographic location

Accepted Answer

True

Answer

False

Statistics & Probability Fun Quiz

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics