TEKS.MATH.8.11C

You spin this spinner 3 times.
Find the probability of these 3 events.
P(red, odd, 3)

• 1/216
• 1/72
• 1/36
• 1/12

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TEKS.MATH.8.11C

Of the mechanical engineers, what is the probability that math is their favorite subject?

• 1.91
• 52%
• 17%
• 35%

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TEKS.MATH.8.11C

The part of the population being studied

• population
• sample
• random

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TEKS.MATH.8.11C

A sample that is by chance.

• random sample
• stratified sample
• systematic sample

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TEKS.MATH.8.11C

Find the probability of drawing a 10 from a standard deck of 52 cards.

• 1 out of 52
• 13 out of 52
• 26 out of 52
• 4 out of 52

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TEKS.MATH.8.11C

TEKS.MATH.7.6D

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

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TEKS.MATH.8.11C

Identify the Sample:
A restaurant wants to know if their customers buy dessert when they eat out. As people leave the restaurant one evening, 20 people are surveyed at random. Eight people say they usually order dessert when they eat out. The restaurant concluded that most customers do not order dessert.

• 20 customers
• All customers
• 8 customers
• Dessert

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TEKS.MATH.8.11C

If I wanted to know how many blades of grass are inside the track, which sampling method could I use?

• Have my students count every blade of grass
• Guess
• Divide the grassy area into 1 inch sections, randomly pick several sections to count, average them together and multiply that by the total square inches.

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TEKS.MATH.8.11C

Ariana wants to know the favorite type of music for students in her class. She puts the names of all the students in a hat, draws 8 names, and surveys those students.

• biased

• random

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TEKS.MATH.8.11C

To get valid results, a sample must be...

• biased

• unbiased

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TEKS.MATH.8.11C