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 |
966943 |
2407 |
- |
2436 |
= |
-29 |
* |
(110 |
/ |
324)
|
= |
-9.84567899 |
| 4 |
966944 |
2444 |
- |
2485 |
= |
-41 |
* |
(107 |
/ |
324)
|
= |
-13.54012343 |
| 5 |
966947 |
2459 |
- |
2528 |
= |
-69 |
* |
(107 |
/ |
324)
|
= |
-22.787037 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Tweedy Elementary
|
-46 |
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 |
30593 |
2407 |
- |
2436 |
= |
-29 |
* |
(94 |
/ |
312)
|
= |
-8.73717948 |
| 4 |
30594 |
2444 |
- |
2485 |
= |
-41 |
* |
(108 |
/ |
312)
|
= |
-14.19230769 |
| 5 |
30597 |
2471 |
- |
2528 |
= |
-57 |
* |
(110 |
/ |
312)
|
= |
-20.09615381 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Tweedy Elementary
|
-43 |
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 |
31158 |
2415 |
- |
2436 |
= |
-21 |
* |
(103 |
/ |
303)
|
= |
-7.13861385 |
| 4 |
31160 |
2436 |
- |
2485 |
= |
-49 |
* |
(95 |
/ |
303)
|
= |
-15.3630363 |
| 5 |
31162 |
2469 |
- |
2528 |
= |
-59 |
* |
(105 |
/ |
303)
|
= |
-20.44554453 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Tweedy Elementary
|
-43 |
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 |
31205 |
2412 |
- |
2436 |
= |
-24 |
* |
(106 |
/ |
297)
|
= |
-8.56565654 |
| 4 |
31207 |
2446 |
- |
2485 |
= |
-39 |
* |
(100 |
/ |
297)
|
= |
-13.1313131 |
| 5 |
31209 |
2464 |
- |
2528 |
= |
-64 |
* |
(91 |
/ |
297)
|
= |
-19.60942758 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Tweedy Elementary
|
-41 |
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 |
31380 |
2419 |
- |
2436 |
= |
-17 |
* |
(108 |
/ |
307)
|
= |
-5.98045601 |
| 4 |
31381 |
2443 |
- |
2485 |
= |
-42 |
* |
(101 |
/ |
307)
|
= |
-13.81758958 |
| 5 |
31382 |
2487 |
- |
2528 |
= |
-41 |
* |
(98 |
/ |
307)
|
= |
-13.08794788 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Tweedy Elementary
|
-33 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-46
|
-43
|
-43
|
-41
|
-33
|
-206.0 |
-41.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -29.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -53.2
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:
