A teacher selects 30 students out of 300 students in grade 6, to participate in a survey about recycling. She asks first 30 students that enters her classroom. Of the 30 students, 25 students refills their water bottles. How many students will refill the bottle?
Biased and Unbiased samples

Quiz
•
Mathematics
•
7th Grade
•
Medium

Sheharyar Samad
Used 220+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
250
350
500
450
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Saeed is surveying his friends to find what sports they like. Saeed wants to ask 50 friends. Instead he decides to ask every friend that arrives into school.
From a sample of 10 friends. 6 of his friends like boxing. What is the sampling method used and prediction of saeed's friend?
Unbiased Systematic, 30
biased voluntary, 30
biased convenience, 45
Unbiased simple random, 45
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The last 20 people that were leaving a mall on a single day were asked about their favorite hobbies.
In total, 1000 people entered the mall. 17 people said they like shopping.
From the sample, how many people can we predict would also like shopping.
85
50
850
120
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The local gym is deciding if customers that want more gym classes. The gym surveys 50 gym customers a day. How could the gym improve their sampling method?
Ask 60 customers
Go to mall and ask 50 people
Ask every person that arrives to the gym
Ask the first 5 customers
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A teacher wants to know how many hours it will take for all students at the school to complete their work. She asks first 5 Students to enter her classroom. What type of sampling is it?
Simple Random
Convenience
Systematic
Voluntary
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Every 3rd student as they enter the school, is surveyed to determine students' favorite color. Describe the type of sampling used.
Simple Random
Convenience sampling
Voluntary
Systematic
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which sampling method will give the most unbiased results, if you wanted to find the number of people in your school that spent more than 4 hours completing their homework.
Ask 30 students in Math and science class
Ask 30 people that you meet at the mal
Ask 30 random students from your school of different ages
Ask 30 friends
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