Statistical inferences

Paul and Denise will collect data to find out where the 7th grade class should hold their end-of-the-year picnic.

Which group should Paul and Denise survey to collect the best data?

• 30 of their friends

• all of the students on the baseball team

• the first 20 students in the lunch line

• 10 randomly selected students from each of the four 7th grade classrooms

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Eric surveyed 402 employees at the company who worked in the marketing department.  Is this a random sample of the employees at the company in general?

• yes
• no

A school randomly chose ten English teachers and asked them which type of juice their students would prefer. Which reason best shows why this isn't a random sample?

• 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.

• The sample only includes girls.

We want to know what the most popular sports brand in school is. What is the population?

• Everybody in the school
• All grade 6 students
• Everyone in the MYP
• All boys in school

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

A student wants to survey mathematics teachers at the school to get their opinion on teaching. What is the population?

• All teachers in the world.

• All teachers within the school.

• All mathematics teachers in the school.

• All teachers except mathematics teachers.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

In  a recent year, the average math scores for all graduates on the ACT was 21.1.

• parameter
• statistic

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

In a survey of a sample of computer users, 8% said their computer had a malfunction that needed to be repaired by a service technician.

• parameter
• statistic

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4