Draw Inferences from Samples (CASC)

A recent survey of 800 seventh graders from across the state shows 4 out of 10 like to play paper football. How many students said they like to play paper football?

• 40 students
• 200 students 
• 320 students
• 8,000 students

Tags

CCSS.7.RP.A.3

Anthony opened a new store and wants to conduct a survey to determine the best store hours. Which is the best representative sample?

• A group of randomly selected people who come to the store in one week.

• A group of randomly selected people who visit his website on one night.

• Every person he meets at his health club one night.

• The first 20 people who walk into his store one day.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

This data is from 100 students in the cafeteria. What conclusion can we make from this data?

• Most students in our school like social studies the best.

• Art class is the most popular class in school.

• Gym class is the most popular class in school.

• Most students in our school like math the best.

Trinity asked a random sample of 50 students at her school if they brought lunch from home today. If 30 answered “yes,” about what percent of students at Trinity’s school brought lunch from home today?

• 15%

• 30%

• 50%

• 60%

• 14 students

• 28 students

• 35 students

• 42 students

The dot plots show the weights of a random sample of fish from two lakes. Pick the statement that describes the variability of the samples.

• The variability of the weights of the fish in Lake S is greater than the variability of the weights of the fish in Lake R.

• The variability of the weights of the fish in the two lakes are about the same.

• The variability of the weights of the fish in Lake R is greater than the variability of the weights of the fish in Lake S.

• You cannot determine variability based on a dot plot.

Tags

CCSS.7.SP.B.4

Group A and Group B were randomly sampled from the same population. What inference can you make?

• Group A has a higher median than Group B.

• Group B has a higher median than Group A.

Tags

CCSS.7.SP.B.4