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 was your mid-term average mark?
Less than 70
3 |
70~80
16 |
80~90
33 |
Higher than 90
11 |
How many days do you spend with your parents every month?
1 day
6 |
2 ~ 5 days
37 |
6 ~ 8 days
10 |
More than 8 days
2 |
How much money do you have in your pocket every month?
Less than 100¥
4 |
100¥ ~ 500¥
15 |
500¥ ~ 1000¥
16 |
More than 1000¥
20 |
How much money do you spend for your friend every month?
Less than 50¥
8 |
50¥~100¥
20 |
100¥~200¥
14 |
More than 200¥
15 |
How much money do you spend at canteen every week?
Less than 50¥
4 |
50¥~100¥
9 |
100¥~200¥
30 |
More than 200¥
11 |
How much money do you spend on take-out food monthly during staying at school?
0¥
9 |
0¥~100¥
20 |
100¥~200¥
17 |
More than 200¥
9 |
How many hours do you spend on your cell phone every day?
Less than 2 hours
22 |
2 ~ 4 hours
25 |
4 ~ 6
7 |
More than 6 hours
1 |
Where do you usually spend most of your money every week?
Taobao
5 |
Canteen
22 |
Take-out
5 |
Phone
4 |
others
19 |
How many times do you go to the supermarket in our school per week?
0
6 |
1
19 |
2
14 |
More than 2
18 |
How many hours do you sleep every day?
Less than 6 hours
17 |
7 ~ 9 hours
35 |
10 ~ 12 hours
3 |
More than 12 hours
0 |