2015
Step 1 |
|
Step 2 |
|
Step 3 |
Get Mean Scale Score from line numbers in this
data file.
|
|
Subtract 'met min'
Scale Score.
from Mean Scale Score to get
Distance From Standard
|
|
Multiply Distance From Standard by
proportion of students in grade.
|
Grade |
Line number |
Mean Scale Score |
- |
Scale Score: met min |
= |
Distance from standard |
* |
(Students tested in grade |
/ |
Students) tested in school |
= |
Weighted Distance From Standard |
11 |
802142 |
2444 |
- |
2628 |
= |
-184 |
* |
(51 |
/ |
51)
|
= |
-184.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Frida Kahlo High
|
-184 |
2016
Step 1 |
|
Step 2 |
|
Step 3 |
Get Mean Scale Score from line numbers in this
data file.
|
|
Subtract 'met min'
Scale Score.
from Mean Scale Score to get
Distance From Standard
|
|
Multiply Distance From Standard by
proportion of students in grade.
|
Grade |
Line number |
Mean Scale Score |
- |
Scale Score: met min |
= |
Distance from standard |
* |
(Students tested in grade |
/ |
Students) tested in school |
= |
Weighted Distance From Standard |
11 |
25086 |
2483 |
- |
2628 |
= |
-145 |
* |
(39 |
/ |
39)
|
= |
-145.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Frida Kahlo High
|
-145 |
2017
Step 1 |
|
Step 2 |
|
Step 3 |
Get Mean Scale Score from line numbers in this
data file.
|
|
Subtract 'met min'
Scale Score.
from Mean Scale Score to get
Distance From Standard
|
|
Multiply Distance From Standard by
proportion of students in grade.
|
Grade |
Line number |
Mean Scale Score |
- |
Scale Score: met min |
= |
Distance from standard |
* |
(Students tested in grade |
/ |
Students) tested in school |
= |
Weighted Distance From Standard |
11 |
25584 |
2436 |
- |
2628 |
= |
-192 |
* |
(39 |
/ |
39)
|
= |
-192.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Frida Kahlo High
|
-192 |
2018
Step 1 |
|
Step 2 |
|
Step 3 |
Get Mean Scale Score from line numbers in this
data file.
|
|
Subtract 'met min'
Scale Score.
from Mean Scale Score to get
Distance From Standard
|
|
Multiply Distance From Standard by
proportion of students in grade.
|
Grade |
Line number |
Mean Scale Score |
- |
Scale Score: met min |
= |
Distance from standard |
* |
(Students tested in grade |
/ |
Students) tested in school |
= |
Weighted Distance From Standard |
11 |
25611 |
2438 |
- |
2628 |
= |
-190 |
* |
(45 |
/ |
45)
|
= |
-190.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Frida Kahlo High
|
-190 |
2019
Step 1 |
|
Step 2 |
|
Step 3 |
Get Mean Scale Score from line numbers in this
data file.
|
|
Subtract 'met min'
Scale Score.
from Mean Scale Score to get
Distance From Standard
|
|
Multiply Distance From Standard by
proportion of students in grade.
|
Grade |
Line number |
Mean Scale Score |
- |
Scale Score: met min |
= |
Distance from standard |
* |
(Students tested in grade |
/ |
Students) tested in school |
= |
Weighted Distance From Standard |
11 |
25770 |
2418 |
- |
2628 |
= |
-210 |
* |
(48 |
/ |
48)
|
= |
-210.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Frida Kahlo High
|
-210 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-184
|
-145
|
-192
|
-190
|
-210
|
-921.0 |
-184.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -115.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -253.2
For the lines, you have the data necessary to plot the chart.
Very last step
The percent of students getting a Free or Reduced Price Meal comes from the following sources: