Difference between revisions of "NSS Tutorial"
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</div> | </div> | ||
| − | ==Strongly Agree== | + | ==Strongly Agree, Percentage== |
<div class='qu'> | <div class='qu'> | ||
<p class='imper'>Show the percentage of students who A_STRONGLY_AGREE to question 22 for the subject '(8) Computer Science' show the same figure for the subject '(H) Creative Arts and Design'. | <p class='imper'>Show the percentage of students who A_STRONGLY_AGREE to question 22 for the subject '(8) Computer Science' show the same figure for the subject '(H) Creative Arts and Design'. | ||
</p> | </p> | ||
| + | Use the '''ROUND''' function to show the percentage without decimal places. | ||
<source lang='sql' class='def'> | <source lang='sql' class='def'> | ||
| Line 161: | Line 162: | ||
<source lang='sql' class='ans'> | <source lang='sql' class='ans'> | ||
| − | SELECT subject,SUM(response*A_STRONGLY_AGREE)/SUM(response) | + | SELECT subject, |
| + | ROUND(SUM(response*A_STRONGLY_AGREE)/SUM(response),0) | ||
FROM nss | FROM nss | ||
WHERE question='Q22' | WHERE question='Q22' | ||
AND subject IN ('(8) Computer Science','(H) Creative Arts and Design') | AND subject IN ('(8) Computer Science','(H) Creative Arts and Design') | ||
GROUP BY subject | GROUP BY subject | ||
| + | </source> | ||
| + | </div> | ||
| + | |||
| + | |||
| + | ==Scores for Institutions in Manchester== | ||
| + | <div class='qu'> | ||
| + | <p class='imper'>Show the average scores for question 'Q01' for each institution that include 'Manchester' in the name. | ||
| + | </p> | ||
| + | The column '''score''' is a percentage - you must use the method outlined above to multiply the percentage by the '''response''' and divide by the total response. Give your answer rounded to the nearest whole number. | ||
| + | |||
| + | <source lang='sql' class='def'> | ||
| + | SELECT institution,subject,score,response | ||
| + | FROM nss | ||
| + | WHERE question='Q22' | ||
| + | AND (institution LIKE '%Manchester%') | ||
| + | ORDER BY institution | ||
| + | </source> | ||
| + | |||
| + | <source lang='sql' class='ans'> | ||
| + | SELECT institution, | ||
| + | ROUND(SUM(response*score)/SUM(response),0) score | ||
| + | FROM nss | ||
| + | WHERE question='Q22' | ||
| + | AND (institution LIKE '%Manchester%') | ||
| + | GROUP BY institution | ||
| + | </source> | ||
| + | </div> | ||
| + | |||
| + | ==Number of Computing Students in Manchester== | ||
| + | <div class='qu'> | ||
| + | <p class='imper'>Show the institution, the total sample size and the number of computing students for institutions in Manchester for 'Q01'. | ||
| + | </p> | ||
| + | |||
| + | <source lang='sql' class='def'> | ||
| + | SELECT institution,subject,score,response | ||
| + | FROM nss | ||
| + | WHERE question='Q22' | ||
| + | AND (institution LIKE '%Manchester%') | ||
| + | </source> | ||
| + | |||
| + | <source lang='sql' class='ans'> | ||
| + | SELECT institution, | ||
| + | SUM(sample), | ||
| + | SUM(CASE WHEN subject LIKE '(8)%' THEN sample END) comp | ||
| + | FROM nss | ||
| + | WHERE question='Q01' | ||
| + | AND (institution LIKE '%Manchester%') | ||
| + | GROUP BY institution | ||
</source> | </source> | ||
</div> | </div> | ||
Revision as of 16:18, 10 December 2012
| Field | Type |
|---|---|
| ukprn | varchar(8) |
| institution | varchar(100) |
| subject | varchar(60) |
| level | varchar(50) |
| question | varchar(10) |
| A_STRONGLY_DISAGREE | int(11) |
| A_DISAGREE | int(11) |
| A_NEUTRAL | int(11) |
| A_AGREE | int(11) |
| A_STRONGLY_AGREE | int(11) |
| A_NA | int(11) |
| CI_MIN | int(11) |
| score | int(11) |
| CI_MAX | int(11) |
| response | int(11) |
| sample | int(11) |
| aggregate | char(1) |
National Student Survey 2012
The National Student Survey http://www.thestudentsurvey.com/ is presented to thousands of graduating students in UK Higher Education. The survey asks 22 questions, students can respond with STRONGLY DISAGREE, DISAGREE, NEUTRAL, AGREE or STRONGLY AGREE.
The table nss has one row per institution, subject and question.
Check out one row
The example shows the number who responded for:
- question 1
- at 'Edinburgh Napier University'
- studying '(8) Computer Science'
Show the the percentage who STRONGLY AGREE
SELECT response FROM nss WHERE question='Q01' AND institution='Edinburgh Napier University' AND subject='(8) Computer Science'
SELECT A_STRONGLY_AGREE FROM nss WHERE question='Q01' AND institution='Edinburgh Napier University' AND subject='(8) Computer Science'
Calculate how many agree or strongly agree
Show the institution and subject where the score is at least 100 for question 15.
SELECT response FROM nss WHERE question='Q01' AND institution='Edinburgh Napier University' AND subject='(8) Computer Science'
SELECT institution, subject FROM nss WHERE question='Q15' AND score>=100
Unhappy Computer Students
Show the institution and score where the score for '(8) Computer Science' is less than 50 for question 'Q15'
SELECT institution,score FROM nss WHERE question='Q15' AND institution='Edinburgh Napier University' AND subject='(8) Computer Science'
SELECT institution, score FROM nss WHERE question='Q15' AND score<50 AND subject = '(8) Computer Science'
More Computing or Creative Students?
Show the total number of students who responded to question 22 for the subject '(8) Computer Science' show the same figure for the subject '(H) Creative Arts and Design'.
You will need to use SUM over the response column and GROUP BY subject
SELECT institution,score FROM nss WHERE question='Q15' AND institution='Edinburgh Napier University' AND subject='(8) Computer Science'
SELECT subject,SUM(response) FROM nss WHERE question='Q22' AND subject IN ('(8) Computer Science','(H) Creative Arts and Design') GROUP BY subject
Strongly Agree Numbers
Show the total number of students who A_STRONGLY_AGREE to question 22 for the subject '(8) Computer Science' show the same figure for the subject '(H) Creative Arts and Design'.
The A_STRONGLY_AGREE column is a percentage. To work out the total number of students who strongly agree you must multiply this percentage by the number who responded (response) and divide by 100 - take the SUM of that.
SELECT institution,score FROM nss WHERE question='Q15' AND institution='Edinburgh Napier University' AND subject='(8) Computer Science'
SELECT subject,SUM(response*A_STRONGLY_AGREE/100) FROM nss WHERE question='Q22' AND subject IN ('(8) Computer Science','(H) Creative Arts and Design') GROUP BY subject
Strongly Agree, Percentage
Show the percentage of students who A_STRONGLY_AGREE to question 22 for the subject '(8) Computer Science' show the same figure for the subject '(H) Creative Arts and Design'.
Use the ROUND function to show the percentage without decimal places.
SELECT institution,score FROM nss WHERE question='Q15' AND institution='Edinburgh Napier University' AND subject='(8) Computer Science'
SELECT subject, ROUND(SUM(response*A_STRONGLY_AGREE)/SUM(response),0) FROM nss WHERE question='Q22' AND subject IN ('(8) Computer Science','(H) Creative Arts and Design') GROUP BY subject
Scores for Institutions in Manchester
Show the average scores for question 'Q01' for each institution that include 'Manchester' in the name.
The column score is a percentage - you must use the method outlined above to multiply the percentage by the response and divide by the total response. Give your answer rounded to the nearest whole number.
SELECT institution,subject,score,response FROM nss WHERE question='Q22' AND (institution LIKE '%Manchester%') ORDER BY institution
SELECT institution, ROUND(SUM(response*score)/SUM(response),0) score FROM nss WHERE question='Q22' AND (institution LIKE '%Manchester%') GROUP BY institution
Number of Computing Students in Manchester
Show the institution, the total sample size and the number of computing students for institutions in Manchester for 'Q01'.
SELECT institution,subject,score,response FROM nss WHERE question='Q22' AND (institution LIKE '%Manchester%')
SELECT institution, SUM(sample), SUM(CASE WHEN subject LIKE '(8)%' THEN sample END) comp FROM nss WHERE question='Q01' AND (institution LIKE '%Manchester%') GROUP BY institution
