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 |
950115 |
2385 |
- |
2436 |
= |
-51 |
* |
(126 |
/ |
370)
|
= |
-17.36756754 |
| 4 |
950116 |
2412 |
- |
2485 |
= |
-73 |
* |
(121 |
/ |
370)
|
= |
-23.87297297 |
| 5 |
950119 |
2463 |
- |
2528 |
= |
-65 |
* |
(123 |
/ |
370)
|
= |
-21.60810808 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Roscoe Elementary
|
-63 |
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 |
30055 |
2390 |
- |
2436 |
= |
-46 |
* |
(104 |
/ |
335)
|
= |
-14.28059701 |
| 4 |
30057 |
2436 |
- |
2485 |
= |
-49 |
* |
(121 |
/ |
335)
|
= |
-17.69850742 |
| 5 |
30058 |
2448 |
- |
2528 |
= |
-80 |
* |
(110 |
/ |
335)
|
= |
-26.26865664 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Roscoe Elementary
|
-58 |
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 |
30620 |
2394 |
- |
2436 |
= |
-42 |
* |
(103 |
/ |
317)
|
= |
-13.64668767 |
| 4 |
30622 |
2421 |
- |
2485 |
= |
-64 |
* |
(98 |
/ |
317)
|
= |
-19.7854889 |
| 5 |
30623 |
2473 |
- |
2528 |
= |
-55 |
* |
(116 |
/ |
317)
|
= |
-20.12618295 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Roscoe Elementary
|
-54 |
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 |
30670 |
2399 |
- |
2436 |
= |
-37 |
* |
(89 |
/ |
284)
|
= |
-11.5950704 |
| 4 |
30672 |
2425 |
- |
2485 |
= |
-60 |
* |
(101 |
/ |
284)
|
= |
-21.33802812 |
| 5 |
30674 |
2469 |
- |
2528 |
= |
-59 |
* |
(94 |
/ |
284)
|
= |
-19.52816899 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Roscoe Elementary
|
-52 |
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 |
30846 |
2387 |
- |
2436 |
= |
-49 |
* |
(100 |
/ |
292)
|
= |
-16.7808219 |
| 4 |
30847 |
2439 |
- |
2485 |
= |
-46 |
* |
(88 |
/ |
292)
|
= |
-13.8630137 |
| 5 |
30848 |
2466 |
- |
2528 |
= |
-62 |
* |
(104 |
/ |
292)
|
= |
-22.08219175 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Roscoe Elementary
|
-53 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-63
|
-58
|
-54
|
-52
|
-53
|
-280.0 |
-56.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -44.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -68.0
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:
