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 |
772373 |
2424 |
- |
2436 |
= |
-12 |
* |
(180 |
/ |
561)
|
= |
-3.85026737 |
4 |
772376 |
2478 |
- |
2485 |
= |
-7 |
* |
(189 |
/ |
561)
|
= |
-2.35828877 |
5 |
772377 |
2509 |
- |
2528 |
= |
-19 |
* |
(192 |
/ |
561)
|
= |
-6.50267379 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Longfellow Elementary
|
-13 |
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 |
24225 |
2440 |
- |
2436 |
= |
4 |
* |
(170 |
/ |
550)
|
= |
1.23636364 |
4 |
24227 |
2469 |
- |
2485 |
= |
-16 |
* |
(191 |
/ |
550)
|
= |
-5.55636363 |
5 |
24228 |
2513 |
- |
2528 |
= |
-15 |
* |
(189 |
/ |
550)
|
= |
-5.15454545 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Longfellow Elementary
|
-9 |
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 |
24726 |
2439 |
- |
2436 |
= |
3 |
* |
(179 |
/ |
532)
|
= |
1.0093985 |
4 |
24727 |
2492 |
- |
2485 |
= |
7 |
* |
(165 |
/ |
532)
|
= |
2.17105263 |
5 |
24730 |
2498 |
- |
2528 |
= |
-30 |
* |
(188 |
/ |
532)
|
= |
-10.60150374 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Longfellow Elementary
|
-7 |
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 |
24748 |
2456 |
- |
2436 |
= |
20 |
* |
(147 |
/ |
492)
|
= |
5.97560974 |
4 |
24750 |
2495 |
- |
2485 |
= |
10 |
* |
(183 |
/ |
492)
|
= |
3.71951219 |
5 |
24752 |
2545 |
- |
2528 |
= |
17 |
* |
(162 |
/ |
492)
|
= |
5.59756096 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Longfellow Elementary
|
15 |
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 |
24918 |
2468 |
- |
2436 |
= |
32 |
* |
(177 |
/ |
510)
|
= |
11.10588234 |
4 |
24919 |
2501 |
- |
2485 |
= |
16 |
* |
(156 |
/ |
510)
|
= |
4.89411763 |
5 |
24920 |
2537 |
- |
2528 |
= |
9 |
* |
(177 |
/ |
510)
|
= |
3.12352941 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Longfellow Elementary
|
19 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-13
|
-9
|
-7
|
15
|
19
|
5.0 |
1.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 43.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -41.0
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: