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 |
905138 |
2327 |
- |
2436 |
= |
-109 |
* |
(42 |
/ |
119)
|
= |
-38.47058818 |
| 4 |
905141 |
2375 |
- |
2485 |
= |
-110 |
* |
(44 |
/ |
119)
|
= |
-40.67226889 |
| 5 |
905142 |
2425 |
- |
2528 |
= |
-103 |
* |
(33 |
/ |
119)
|
= |
-28.56302517 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Forty-Second Street Elementary
|
-108 |
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 |
28608 |
2362 |
- |
2436 |
= |
-74 |
* |
(34 |
/ |
125)
|
= |
-20.128 |
| 4 |
28611 |
2370 |
- |
2485 |
= |
-115 |
* |
(44 |
/ |
125)
|
= |
-40.48 |
| 5 |
28612 |
2399 |
- |
2528 |
= |
-129 |
* |
(47 |
/ |
125)
|
= |
-48.504 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Forty-Second Street Elementary
|
-109 |
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 |
29175 |
2341 |
- |
2436 |
= |
-95 |
* |
(45 |
/ |
110)
|
= |
-38.86363636 |
| 4 |
29177 |
2377 |
- |
2485 |
= |
-108 |
* |
(28 |
/ |
110)
|
= |
-27.49090903 |
| 5 |
29179 |
2350 |
- |
2528 |
= |
-178 |
* |
(37 |
/ |
110)
|
= |
-59.87272721 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Forty-Second Street Elementary
|
-126 |
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 |
29224 |
2287 |
- |
2436 |
= |
-149 |
* |
(31 |
/ |
99)
|
= |
-46.65656564 |
| 4 |
29226 |
2362 |
- |
2485 |
= |
-123 |
* |
(42 |
/ |
99)
|
= |
-52.18181815 |
| 5 |
29228 |
2396 |
- |
2528 |
= |
-132 |
* |
(26 |
/ |
99)
|
= |
-34.66666658 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Forty-Second Street Elementary
|
-134 |
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 |
29402 |
2346 |
- |
2436 |
= |
-90 |
* |
(23 |
/ |
99)
|
= |
-20.90909088 |
| 4 |
29403 |
2346 |
- |
2485 |
= |
-139 |
* |
(37 |
/ |
99)
|
= |
-51.94949485 |
| 5 |
29404 |
2397 |
- |
2528 |
= |
-131 |
* |
(39 |
/ |
99)
|
= |
-51.60606048 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Forty-Second Street Elementary
|
-124 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-108
|
-109
|
-126
|
-134
|
-124
|
-601.0 |
-120.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -87.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -153.2
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:
