Case Study
Please loot at following survey data. I want you to tell me
1. what kind of sampling techniques applied on this survey and what kind of bias can be existed on this survey.
2. How can we improve this survey? What should we need to do in order to collect accurate information?
(Write your answer with regards to sampling techniques and bias)
3. What kind of hypothesis can you build based on this survey?
4. What is your conclusion can you end up?
1. what kind of sampling techniques applied on this survey and what kind of bias can be existed on this survey.
2. How can we improve this survey? What should we need to do in order to collect accurate information?
(Write your answer with regards to sampling techniques and bias)
3. What kind of hypothesis can you build based on this survey?
4. What is your conclusion can you end up?
I am
Male
31 |
Female
24 |
My class is
3-4
15 |
3-3
13 |
3-2
17 |
3-1
11 |
what is you mid-term average mark?
Less than 70
3 |
70~80
16 |
80~90
33 |
Higher than 90
11 |
How many pens do you have?
Less than 5
22 |
5~7
8 |
8~10
11 |
More than 10
13 |
How many hours do you sleep every day?
Less than 6 hours
17 |
7~9
35 |
10~12
3 |
More than 12 hours
0 |
how much hours do you spend on playing games?
Less than 1 hours
20 |
1 ~ 2 hours
23 |
3 ~ 5 hours
8 |
More than 5 hours
4 |
How much hours do you spend on EXERCISE per week?
Less than 1 hours
21 |
1 ~ 2 hours
19 |
3 ~ 5 hours
11 |
More than 5 hours
3 |
How many hours do you spend on your cell phone every day?
Less than 2 hours
22 |
2 ~ 4 hours
26 |
4 ~ 6 hours
7 |
More than 6 hours
1 |
How many hours do you spend on studying every day?
Less 1 hour
2 |
1~2
13 |
3~4
11 |
More than 4 hours
29 |
How many days have you been suspended during 2012~2013 school term?
0
41 |
1
6 |
2
4 |
More than 2
6 |