Practice Inference Unit Questions

Herald is keeping track of eagles. To do so, he put tags on 25 eagles and released them. Later, he catches 120 eagles; 16 eagles were tagged. Find the best estimate for the Eagle population?

• 205
• 310
• 400
• 188

You must find the 5 number summary, which includes the minimum, maxium, median, lower quartile, and upper quartile  in order to make a box and whisker plot. 

• True
• False

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Identify the Population and the sample:
Gwinnett County Public Schools randomly selected 230 teachers to find out which technology resource is the most effective. 30 teachers chose Safari Montage, 45 selected Learn Zillion, 100 chose Ed Puzzle, and 55 chose Kahoot. GCPS concluded that all teachers prefer Ed Puzzle.

• sample: All teachers in district    population: 230 teachers
• sample: 230 teachers   population: All teachers in district
• sample: technology club  population: all students
• sample: 8th grade teachers   population: 100 teachers

Solve the proportion.
2

• q=2
• q=9
• q=4.5
• q=6

Tags

CCSS.7.RP.A.2B

Solve the proportion.

• p=31.3
• p=308
• p=924
• p=532

Tags

CCSS.6.EE.B.7

Which of the following best describes the process of finding the interquartile range for a set of data?

• ADD the biggest and smallest numbers
• Place the number in order from least to greatest then find the middle.
• Find the difference between the Maximum and the Minimum.
• Subtract Q3 from Q1

Tags

CCSS.6.SP.B.5C

Identify the Population:
Gwinnett County Public Schools randomly selected 230 teachers to find out which technology resource is the most effective. 30 teachers chose Safari Montage, 45 selected Learn Zillion, 100 chose Ed Puzzle, and 55 chose Kahoot. GCPS concluded that all teachers prefer Ed Puzzle.

• 230 Teachers
• All teachers
• 100 Teachers
• 55 Teachers

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

The manager of an apartment building asked people from the lower floor of building B if they think noise is a problem.

• Biased
• Unbiased

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.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

Gregory collected two random samples of 100 Woman regarding woman’s color bag preference for his new bag business. Make an inference from the data.

• Twice as many women prefer blue bags to black
• Women prefer red bags
• Twice as many women prefer black bags than blue.
• Three times as many women prefer red bags

Tags

CCSS.6.RP.A.3A