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 |
87210 |
2337 |
- |
2436 |
= |
-99 |
* |
(38 |
/ |
101)
|
= |
-37.24752468 |
| 4 |
87211 |
2398 |
- |
2485 |
= |
-87 |
* |
(31 |
/ |
101)
|
= |
-26.70297029 |
| 5 |
87214 |
2430 |
- |
2528 |
= |
-98 |
* |
(32 |
/ |
101)
|
= |
-31.04950493 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Howard Elementary
|
-95 |
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 |
2443 |
2379 |
- |
2436 |
= |
-57 |
* |
(34 |
/ |
93)
|
= |
-20.83870963 |
| 4 |
2445 |
2390 |
- |
2485 |
= |
-95 |
* |
(34 |
/ |
93)
|
= |
-34.73118272 |
| 5 |
2447 |
2445 |
- |
2528 |
= |
-83 |
* |
(25 |
/ |
93)
|
= |
-22.31182793 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Howard Elementary
|
-78 |
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 |
2516 |
2375 |
- |
2436 |
= |
-61 |
* |
(21 |
/ |
80)
|
= |
-16.0125 |
| 4 |
2517 |
2427 |
- |
2485 |
= |
-58 |
* |
(30 |
/ |
80)
|
= |
-21.75 |
| 5 |
2520 |
2422 |
- |
2528 |
= |
-106 |
* |
(29 |
/ |
80)
|
= |
-38.425 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Howard Elementary
|
-76 |
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 |
2519 |
2370 |
- |
2436 |
= |
-66 |
* |
(34 |
/ |
86)
|
= |
-26.09302324 |
| 4 |
2521 |
2444 |
- |
2485 |
= |
-41 |
* |
(20 |
/ |
86)
|
= |
-9.5348837 |
| 5 |
2523 |
2442 |
- |
2528 |
= |
-86 |
* |
(32 |
/ |
86)
|
= |
-31.99999998 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Howard Elementary
|
-68 |
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 |
2541 |
2379 |
- |
2436 |
= |
-57 |
* |
(30 |
/ |
82)
|
= |
-20.85365851 |
| 4 |
2542 |
2392 |
- |
2485 |
= |
-93 |
* |
(28 |
/ |
82)
|
= |
-31.7560975 |
| 5 |
2543 |
2435 |
- |
2528 |
= |
-93 |
* |
(24 |
/ |
82)
|
= |
-27.21951212 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Howard Elementary
|
-80 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-95
|
-78
|
-76
|
-68
|
-80
|
-397.0 |
-79.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -52.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -106.4
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:
