Random, Biased, & Representative Samples

I survey a senior citizen center to gain information about the population of NE Oklahoma. Which of the following best describes my population sample?

• Biased, sample is randomly taken or representative of population.

• Biased, sample is not randomly taken or representative of population.

• Representative, sample is randomly taken & representative of population.

• Representative, sample is not randomly taken or biased in terms the of population.

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

I randomly surveyed 10 students from every area school to get information about student interests. Which statement best describes my sample?

• Biased, sample is not randomly taken or representative of the population.

• Biased, sample is randomly taken & representative of the population.

• Representative, sample is randomly taken & representative of the population.

• Representative, sample is not randomly taken or representative of the population.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

I surveyed 100 people at a grocery store by selecting every 3rd person that entered, does this sample represent the local population?

• Yes, it is random and unbiased.

• Yes, it is random and biased.

• No, while it is random, it is also biased.

• No, while it is random, it is also unbiased.

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

I pick the first 5 people I see to be my sample, what have I done?

• Taken a random sample.

• Taken a representative sample.

• Taken a biased sample.

I drew 10 names from a hat containing the names of every student that I teach, what type of sample have I taken?

• A random sample.

• A biased sample.

Tags

CCSS.7.SP.A.1

I assign each student a number and then roll a 20 sided die to determine which students will be chosen for an exercise, what type of sample is this?

• A random sample.

• A biased sample.

I pick the first 10 people I see on the street as a sample of the population, what type of sample is this?

• Random sample.

• Biased sample.

• Representative sample.

I want to study the population of Joplin, so I randomly survey 100 students from Joplin. What can be said about my sample?

• Not representative of the population.

• Not biased.

• Not random.

• Representative of the population.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1