Math 7 Random Sampling

_________ is a sample in which each individual or object in the entire population has an equal chance of being selected.

• Sample

• Population

• Random Sample

• Quartile

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

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 ask 8th grade students who went on a field trip last year
• to randomly choose some 7th grade students to select a location
• to ask all 7th grade teachers and administrators for a location
• to ask the student council to choose a location

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

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 not a good sample in this case?

• The sample didn't include students.
• The sample is too small.
• The sample can only be accurate if each teacher is included in the sample

Tags

CCSS.7.SP.A.1

Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?

• thirty students who are often tardy
• thirty students who are rarely tardy
• thirty of her friends
• thirty randomly selected students from her school

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

The entire group studied is called the

• sample
• population

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

Should more money be put into athletic programs or music programs at school?  Ask:  students in the band program.

• Biased 
• Unbiased

Tags

CCSS.RL.11-12.6

Which of the following sampling methods would be best for the given scenario:

A truck load of 3,000 oranges were delivered to a wholesale market. You are allowed to check 1% of the oranges before deciding whether or now to accept the shipment.

• Systematic Random

• Simple Random

• Stratified Random

Which of the following sampling methods would be best for the given scenario:

A grocer would like to find what items the store should carry to attract more customers. The grocer wants to survey 100 people in the neighborhood.

• Systematic Random

• Stratified Random

• Simple Random

Which of the following sampling methods would be best for the given scenario:

A frozen yogurt store sells five flavors. To check the quality of the yogurt, five tubs of each flavor were sampled.

• Simple Random

• Stratified Random

• Systematic Random

Which of the following sampling methods would be best for the given scenario:

A group of students conducted an online poll of Internet users by randomly selecting 500 Internet users.

• Simple Random

• Stratified Random

• Systematic Random