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 |
3 |
2223204 |
2382 |
- |
2436 |
= |
-54 |
* |
(180 |
/ |
493)
|
= |
-19.71602429 |
4 |
2223207 |
2427 |
- |
2485 |
= |
-58 |
* |
(169 |
/ |
493)
|
= |
-19.8823529 |
5 |
2223208 |
2440 |
- |
2528 |
= |
-88 |
* |
(144 |
/ |
493)
|
= |
-25.70385391 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Porter Elementary
|
-65 |
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 |
3 |
68185 |
2376 |
- |
2436 |
= |
-60 |
* |
(144 |
/ |
475)
|
= |
-18.18947364 |
4 |
68188 |
2420 |
- |
2485 |
= |
-65 |
* |
(171 |
/ |
475)
|
= |
-23.4 |
5 |
68190 |
2465 |
- |
2528 |
= |
-63 |
* |
(160 |
/ |
475)
|
= |
-21.22105262 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Porter Elementary
|
-63 |
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 |
3 |
70003 |
2387 |
- |
2436 |
= |
-49 |
* |
(168 |
/ |
488)
|
= |
-16.86885246 |
4 |
70005 |
2419 |
- |
2485 |
= |
-66 |
* |
(142 |
/ |
488)
|
= |
-19.204918 |
5 |
70007 |
2444 |
- |
2528 |
= |
-84 |
* |
(178 |
/ |
488)
|
= |
-30.63934423 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Porter Elementary
|
-67 |
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 |
3 |
70162 |
2388 |
- |
2436 |
= |
-48 |
* |
(155 |
/ |
446)
|
= |
-16.68161434 |
4 |
70163 |
2407 |
- |
2485 |
= |
-78 |
* |
(153 |
/ |
446)
|
= |
-26.75784751 |
5 |
70166 |
2440 |
- |
2528 |
= |
-88 |
* |
(138 |
/ |
446)
|
= |
-27.22869952 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Porter Elementary
|
-71 |
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 |
3 |
70677 |
2391 |
- |
2436 |
= |
-45 |
* |
(120 |
/ |
386)
|
= |
-13.98963731 |
4 |
70678 |
2393 |
- |
2485 |
= |
-92 |
* |
(135 |
/ |
386)
|
= |
-32.17616574 |
5 |
70679 |
2433 |
- |
2528 |
= |
-95 |
* |
(131 |
/ |
386)
|
= |
-32.24093261 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Porter Elementary
|
-78 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-65
|
-63
|
-67
|
-71
|
-78
|
-344.0 |
-68.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -53.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -83.8
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: