Making Inferences Review

What are the two medians?

• 10 and 10

• 30 and 35

• 40 and 50

• 70 and 65

Tags

CCSS.HSS.ID.A.3

Which group has the wider spread?

• Daytime People

• Evening People

• They are the same

• You cannot tell from the box plots.

Tags

CCSS.7.SP.B.4

A sample is being chosen for a survey to find out how people feel about adding more stop signs near a school. Which group would be least biased?

• voters

• drivers

• students

• teachers

Tags

CCSS.RL.11-12.6

A random sample of 50 was taken from a shipment of 12,000 light bulbs. There were 2 broken bulbs in the sample. How many broken bulbs would you expect in the entire shipment?

• 240

• 480

• 2,400

• 4,800

Tags

CCSS.7.SP.A.2

A toy company uses a random sample to simulate 10 toys to inspect out of every 1,000. The integers 1 to 5 represent toys that are below standard:

76 68 32 2 14

35 93 61 21 51

Based on this sample, how many toys will be below standard?

• 1

• 5

• 10

• 100

Tags

CCSS.7.SP.A.2

In the box plots, the IQR is 2. Which statement is true about the data?

• The difference between the medians is about 2 times the IQR

• The difference between the medians is about 3 times the IQR

• The difference between the medians is about 4 times the IQR

• The difference between the medians is about 5 times the IQR

Tags

CCSS.7.SP.B.3

Tia wants to find out student's favorite sport. She asks a sample of students, "Do you like soccer?" Is the question biased? Explain.

• Yes; the students were not randomly selected.

• Yes; it is suggesting soccer and the results will not tell her about other sports.

• No; this question will reveal if they like soccer.

• No; the sample is of random students.

Tags

CCSS.RL.11-12.6

You are wanting to know that favorite sport of students at your school. Which of these is a random sample for a population of students?

• Randomly ask students at the next basketball game.

• Ask the first 50 students that come off the buses.

• Randomly select 50 students from art class

• Have the principal give you names of 40 random students from the online database.

Tags

CCSS.HSS.IC.B.3

Why do you gather data from a sample?

• To tell you information about that sample.

• To provide information that can tell you about the population.

• To do math.

• To compare it to something else

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

What is the difference between the medians from the data sets?

• 10

• 30

• 40

• 60