Upcoming SlideShare
×

Survey project

1,055 views

Published on

0 Likes
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
• Be the first to comment

• Be the first to like this

Views
Total views
1,055
On SlideShare
0
From Embeds
0
Number of Embeds
29
Actions
Shares
0
8
0
Likes
0
Embeds 0
No embeds

No notes for slide

Survey project

1. 1. Survey & Statistical Analysis<br />By: Rebekah Mickle, Eva Tram, & Richard Gutierrez<br />
2. 2. Survey<br />Gender: ______<br />Grade: ______<br />Age: ____<br />How many minutes do you spend studying for a test? ________<br />How many classes are you failing? ______<br />How many Advanced Placement/Honors classes are you taking? _______<br /> Circle if you agree or disagree<br />It is OK to copy homework from others.<br /> Agree or Disagree<br />It is OK to test or listen to music during class time.<br /> Agree or Disagree<br />Circle the best choice<br />It is better to (Study the day before the test OR Study many times throughout the week before the test)<br />
3. 3. Confidence Intervals<br />28.59 ± (1.99)(31.70/(78^(.05)))<br />We are 95% confident the true mean for minutes a student studies for a test at B.P.H.S is between 21.31 and 35.87 minutes.<br />0.40 ± (1.99)(1.14/(78^(.05)))<br />We are 95% confident the true mean for the number of classes students at B.P.H.S are failing is between .13 and .67.<br />1.89 ± (1.99)(2.78/(79^(0.05)))<br />We are 95% confident that the true mean for the number of Advanced Placement/ Honors classes students at B.P.H.S are taking is between 1.27 and 2.51.<br />
4. 4. Males Vs. Females Q4<br />H0: μMales=μFemales<br />Ha: μMales≠μFemales<br />Assumptions/Conditions:<br />Random: Sample was randomly chosen.<br />Independent: One students opinion is independent from another's.<br />Conduct a 2 Sample t-test<br />Values:<br /><ul><li>d.f= 69
5. 5. Male Sample average=28.9, Male Sample Standard Deviation=34.1, Male Sample size=36
6. 6. Female Sample average= 27.5, Female Sample Standard Deviation=29.0, Female Sample size=44</li></ul>With a P-Vale of 0.846, we fail to reject the null hypothesis. The average number of minutes spent studying is equal for males and females.<br />
7. 7. Males Vs. Females Q5<br />H0: μMales=μFemales<br />Ha: μMales≠μFemales<br />Assumptions/Conditions:<br />Random: Sample was randomly chosen.<br />Independent: One students opinion is independent from another's.<br />Conduct a 2 Sample t-test<br />Values:<br /><ul><li>d.f= 52.2
8. 8. Male Sample average=0.486, Male Sample Standard Deviation=1.46, Male Sample size=36
9. 9. Female Sample average=0.326, Female Sample Standard Deviation=0.81, Female Sample size=44</li></ul>With a P-Vale of 0.600 we fail to reject the null hypothesis. The average classes a student is failing is equal for males and females.<br />
10. 10. Males vs. Females Q6<br />H0: μMales=μFemales<br />Ha: μMales≠μFemales<br />Assumptions/Conditions:<br />Random: Sample was randomly chosen.<br />Independent: One students opinion is independent from another's.<br />Conduct a 2 Sample t-test<br />Values:<br /><ul><li>d.f=
11. 11. Male Sample average=1.02, Male Sample Standard Deviation=1.29, Male Sample size=36
12. 12. Female Sample average=1.341, Female Sample Standard Deviation=1.256, Female Sample size=45</li></ul>With a P-Vale of 0.264 we fail to reject the null hypothesis. The average Advanced Placement/Honors classes for males is equal to that of the females.<br />
13. 13. Chi2:Q7<br />H0:Opinions are independent from grade level.<br />Ha: Opinions are not independent from grade level.<br />Assumptions/Conditions:<br />Random: Sample was randomly chosen.<br />Independent: One students opinion is independent from another's.<br />Conduct a Chi2 test<br />Σ(Observed-Expected)2 d.f=(2 − 1)(2 − 1) = 1<br /> Expected<br />5.χ2=0.015, With a P-value as high as 0.901, we fail to reject that students feel it is not okay to copy homework regardless of grade level.<br />
14. 14. Chi2:Q8<br />H0:Opinions are independent from grade level.<br />Ha: Opinions are not independent from grade level.<br />Assumptions/Conditions:<br />Random: Sample was randomly chosen.<br />Independent: One students opinion is independent from another's.<br />Conduct a Chi2 test<br />Σ(Observed-Expected)2d.f=(2 − 1)(2 − 1) = 1<br /> Expected<br />5. 5.χ2=0.000469, With a P-value as high as 0.945, we fail to reject that students feel it is not okay to listen to music during class time regardless of grade level.<br />
15. 15. Chi2:Q9<br />H0:Opinions are independent from grade level.<br />Ha: Opinions are not independent from grade level.<br />Assumptions/Conditions:<br />Random: Sample was randomly chosen.<br />Independent: One students opinion is independent from another's.<br />Conduct a Chi2 test<br />Σ(Observed-Expected)2d.f=(2 − 1)(2 − 1) = 1<br />Expected<br />5. 5.χ2=0.173, With a P-value as high as 0.677, we fail to reject that students feel it is better to study for a test throughout the week before the test regardless of grade level.<br />