Name________________________
Date ________
FADA HW: Sample Design
Complete the 5 review questions and then choose 20 POINTS worth of new material.
Mix and match as YOU NEED to feel confident with this material.
______
25
I. REVIEW – complete all of these. (1 pt each)
Solve for X
1. 2 x  6  10
3.
1
(6 x  24)  0
2
2.
2( x  1)  (2 x 11)
4.
1
x3 7
2
5. What does PEMDAS stand for and what does it help us with?
II. PRACTICE – 1 pt each
Identify if the follow sampling techniques are Simple Random Sampling, Stratified Sampling,
Cluster Sampling, Systematic Sampling, or Convenience Sampling
6. Randomly select high schools from different geographic regions and survey all students at
each of the chosen schools.
7. Survey every 10th student who walks in the front entrance of the school.
8. Survey the first five students who enter the classroom.
9. A state is divided into regions using zip codes. A random sample of 15 zip code areas is
selected.
10. At a Key Club meeting, the names of all members are written on identical slips of paper and
placed in a bowl. The names of five members are drawn. These five people will participate in
interviews with a pollster.
11. The first 50 people entering a museum are asked if they support the city council’s increase
in funding for the arts.
12. A marketing expert for MTV is planning a survey in which 500 people will be randomly
selected from each of the following age groups: 10-14; 15-19; 20-24; 25- 29.
13. At a local tire manufacturing plant, every 20th tire coming off the assembly line is checked
for defects.
14. Obtain a list of students enrolled in a high school. Number these students and then use a
random number table to obtain the sample.
15. Elementary school children in a large city are classified based on the neighborhood school
they attend. A random sample of five elementary schools is selected. All the children from each
selected school are included in the sample.
III. MORE PRACTICE – 2 pts each
Identify the sampling technique and explain why. (1 pt. for correct type, 1 pt. for explanation)
16. At a local fast food restaurant, every 100 th burger ordered is checked for quality by the
manager.
17. The first 20 students entering a classroom are asked if they support the changes to the
cafeteria food.
18. From the senior, junior, sophomore, and freshman classes at SBHS, one class is randomly
selected and all members of that class are surveyed.
19. Obtain a list of teachers at SBHS. Number these teachers and then use a random number
table to obtain the sample.
IV. REACH FOR THE STARS! – 5 pts each
Solve the following equations. “No solution” and “All Real Numbers” are valid answers.
24. Describe the similarities and differences between a stratified sampling and a simple random
sampling? Answer must be in complete sentences.
25. In your own words, explain how bias can be demonstrated in a survey.