A school randomly chose ten English teachers and asked them which type of juice their students would prefer. Which reason best shows why this sample is biased?

The sample didn't include students.

The sample can only be accurate if each teacher is included in the sample

The choir director in a high school wants to know how the students in the school feel about singing. If the director selects 100 girls and 100 boys to complete a survey, which method will result in a biased sample?

The students will be selected from the choir

The students will be selected randomly throughout the school

The students will be selected on Wednesday afternoon before the choir concert

The choir director will select five students from each of the forty homerooms in the school

A radio station in Raleigh, NC wants to know the most popular song of the week. The DJ surveys random listeners who call in throughout the week. What is the population of the DJ’s survey?

listeners of this radio station

the listeners who call the station

the most popular song of the week

Which of the following is TRUE?

In a simple random sample, all individuals and all subsets of the sample size have an equal chance of being selected.

In a multi-stage random sample, all individuals and all subsets of the sample size have an equal chance of being selected.

In a stratified random sample, all individuals and all subsets of the sample size have an equal chance of being selected.

In a cluster random sample, all individuals and all subsets of the sample size have an equal chance of being selected.

A factory manufactures light bulbs. The factory currently has 300 boxes of light bulbs in its warehouse. To test the quality of bulbs, Alex decides to take out a sample of bulbs and test them to see if they work. Which surveying method will give him the least valid results?

selecting one box randomly and then selecting all the bulbs from the box

selecting ten boxes randomly, mixing the bulbs of these boxes together and then selecting ten bulbs randomly

selecting ten boxes randomly and then selecting one bulb randomly from each box

selecting one bulb randomly from every tenth box

To gather data on a 1200-acre pine forest in Louisiana, the U.S. Forest Service laid a grid of 1410 equally spaced circular plots over a map of the forest. A ground survey visited a sample of 10% of the plots. Explain how you would use a random number generator to choose an SRS of 141 plots.

Number the plots from 1 to 1410. Use a random number generator to select 141 different integers from 1 to 1410. Select the corresponding 141 plots.

Number the plots from 1 to 1410. Use a random number generator to select 141 different integers from 1 to 1500. Select the corresponding 141 plots.

Number the plots from 0001 to 1410. Go to the random number table and pick a starting point. Moving left to right, record four-digit numbers, skipping any numbers that are not between 0001 and 1410 and any repeated numbers, until you have 141 different numbers between 0001 and 1410. Select the 141 plots corresponding to these numbers.

Number the plots from 1 to 1410. Use a random number generator to select 141 integers from 1 to 1410. Select the plots corresponding to those numbers.

Number the plots from 1 to 1410. Use a random number generator to select a random digit between 1 and 10. Starting at that number, select that corresponding plot plus every 10th plot after that until you have a total of 141 plots.

A department store mails a customer satisfaction survey to people who make credit card purchases at the store. This month, 45,000 people made credit card purchases. Surveys are mailed to 1000 of these people, chosen at random, and 137 people return the survey form. Identify the population and the sample.

P: 45,000 people who made credit card purchases. S: 137 returned surveys.

P: 1,000 people that made credit card purchases who received a survey S: 137 returned surveys.

P: 45,000 people who made credit card purchases. S: 1,000 people that made credit card purchases who received a survey

P: All people who that have made credit card purchases. S: 1,000 people that made credit card purchases who received a survey

Q. Identify the problem (if any) with this sampling method. To survey how many hours of sleep a typical student gets on a school night, a student questioned the first 100 students arriving to school on a Wednesday morning.

Biased Convenience Sample: Underestimates average sleep time.

Biased Voluntary Response Sample: Underestimates average sleep time.

Biased Voluntary Response Sample: Overestimates average sleep time.

Biased Convenience Sample: Overestimates average sleep time.

This sample results should be a good estimate for the population of all students average sleep time.

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?

to randomly choose some 7th grade students to select a location

to randomly ask 8th grade students who went on a field trip last year

to ask all 7th grade teachers and administrators for a location

to ask the student council to choose a location

In a school of 2500 students, the students in a AP Statistics class are planning a random survey of 100 students to estimate the proportion who would rather drop soccer than band during this time of severe budget cuts. Their teacher suggests instead to survey 200 students in order to

make possible stratification between soccer and band.

Sampling Methods Review

Quiz

•

Mathematics

•

10th - 12th Grade

•

Practice Problem

•

Hard

Barbara White

FREE Resource

Stratified

Systematic

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30 questions

Interview every 10th student who enters the school in the morning.

Assign each car in a dealership a number and then use a random-number table to select the cars to be inspected.

Marianne wanted to know students' opinion on the new schedule at school. She survey's the first 30 students who come into her class.

Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.
This is a form of:

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.
She selects the five closest to her desk.

An independent research company wants to go door to door to survey people in the city of Fontana. The company decides to number all blocks within the city limit, randomly choose 1 block and survey all households on that block.
This is an example of:

A teacher wants to know how well her students are doing on a topic. She randomly picks one class to survey.

A teacher splits her classes up by period. She then randomly picks 3 students from each period to do a survey.

Every possible group of units of the required size has the same chance of being the selected sample as any other sample of the same size.

This sample is selected by dividing the population into subgroups and then taking a fixed number of units from each group using the simple random sample.

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Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics

Sampling Methods Review

30 questions

Interview every 10th student who enters the school in the morning.

Assign each car in a dealership a number and then use a random-number table to select the cars to be inspected.

Marianne wanted to know students' opinion on the new schedule at school. She survey's the first 30 students who come into her class.

Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.This is a form of:

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.She selects the five closest to her desk.

An independent research company wants to go door to door to survey people in the city of Fontana. The company decides to number all blocks within the city limit, randomly choose 1 block and survey all households on that block. This is an example of:

A teacher wants to know how well her students are doing on a topic. She randomly picks one class to survey.

A teacher splits her classes up by period. She then randomly picks 3 students from each period to do a survey.

Every possible group of units of the required size has the same chance of being the selected sample as any other sample of the same size.

This sample is selected by dividing the population into subgroups and then taking a fixed number of units from each group using the simple random sample.

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics

Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest.
This is a form of:

A teacher wants to know the average time spent doing homework by the students in her class of 20 girls and 5 boys.
She selects the five closest to her desk.

An independent research company wants to go door to door to survey people in the city of Fontana. The company decides to number all blocks within the city limit, randomly choose 1 block and survey all households on that block.
This is an example of: