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 |
207713 |
2374 |
- |
2436 |
= |
-62 |
* |
(118 |
/ |
350)
|
= |
-20.90285713 |
| 4 |
207716 |
2402 |
- |
2485 |
= |
-83 |
* |
(120 |
/ |
350)
|
= |
-28.45714279 |
| 5 |
207718 |
2442 |
- |
2528 |
= |
-86 |
* |
(112 |
/ |
350)
|
= |
-27.52 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Cambridge Elementary
|
-77 |
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 |
6166 |
2343 |
- |
2436 |
= |
-93 |
* |
(112 |
/ |
342)
|
= |
-30.45614034 |
| 4 |
6168 |
2395 |
- |
2485 |
= |
-90 |
* |
(119 |
/ |
342)
|
= |
-31.31578944 |
| 5 |
6169 |
2426 |
- |
2528 |
= |
-102 |
* |
(111 |
/ |
342)
|
= |
-33.10526311 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Cambridge Elementary
|
-95 |
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 |
6342 |
2392 |
- |
2436 |
= |
-44 |
* |
(109 |
/ |
322)
|
= |
-14.8944099 |
| 4 |
6343 |
2390 |
- |
2485 |
= |
-95 |
* |
(96 |
/ |
322)
|
= |
-28.32298128 |
| 5 |
6346 |
2412 |
- |
2528 |
= |
-116 |
* |
(117 |
/ |
322)
|
= |
-42.14906829 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Cambridge Elementary
|
-85 |
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 |
6338 |
2334 |
- |
2436 |
= |
-102 |
* |
(90 |
/ |
282)
|
= |
-32.55319147 |
| 4 |
6339 |
2399 |
- |
2485 |
= |
-86 |
* |
(102 |
/ |
282)
|
= |
-31.10638292 |
| 5 |
6342 |
2395 |
- |
2528 |
= |
-133 |
* |
(90 |
/ |
282)
|
= |
-42.44680849 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Cambridge Elementary
|
-106 |
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 |
6397 |
2369 |
- |
2436 |
= |
-67 |
* |
(99 |
/ |
282)
|
= |
-23.52127654 |
| 4 |
6398 |
2398 |
- |
2485 |
= |
-87 |
* |
(80 |
/ |
282)
|
= |
-24.68085104 |
| 5 |
6399 |
2413 |
- |
2528 |
= |
-115 |
* |
(103 |
/ |
282)
|
= |
-42.00354599 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Cambridge Elementary
|
-90 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-77
|
-95
|
-85
|
-106
|
-90
|
-453.0 |
-90.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -60.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -120.6
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:
