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 |
939143 |
2362 |
- |
2436 |
= |
-74 |
* |
(102 |
/ |
288)
|
= |
-26.20833328 |
| 4 |
939146 |
2404 |
- |
2485 |
= |
-81 |
* |
(92 |
/ |
288)
|
= |
-25.87499996 |
| 5 |
939147 |
2407 |
- |
2528 |
= |
-121 |
* |
(94 |
/ |
288)
|
= |
-39.49305545 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Lovelia P. Flournoy Elementary
|
-92 |
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 |
29707 |
2378 |
- |
2436 |
= |
-58 |
* |
(102 |
/ |
287)
|
= |
-20.61324037 |
| 4 |
29709 |
2387 |
- |
2485 |
= |
-98 |
* |
(98 |
/ |
287)
|
= |
-33.46341457 |
| 5 |
29711 |
2423 |
- |
2528 |
= |
-105 |
* |
(87 |
/ |
287)
|
= |
-31.82926824 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Lovelia P. Flournoy Elementary
|
-86 |
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 |
30272 |
2367 |
- |
2436 |
= |
-69 |
* |
(108 |
/ |
283)
|
= |
-26.33215543 |
| 4 |
30274 |
2417 |
- |
2485 |
= |
-68 |
* |
(89 |
/ |
283)
|
= |
-21.38515898 |
| 5 |
30276 |
2444 |
- |
2528 |
= |
-84 |
* |
(86 |
/ |
283)
|
= |
-25.5265017 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Lovelia P. Flournoy Elementary
|
-73 |
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 |
30320 |
2350 |
- |
2436 |
= |
-86 |
* |
(96 |
/ |
275)
|
= |
-30.02181817 |
| 4 |
30323 |
2404 |
- |
2485 |
= |
-81 |
* |
(102 |
/ |
275)
|
= |
-30.04363629 |
| 5 |
30324 |
2416 |
- |
2528 |
= |
-112 |
* |
(77 |
/ |
275)
|
= |
-31.36 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Lovelia P. Flournoy Elementary
|
-91 |
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 |
30494 |
2380 |
- |
2436 |
= |
-56 |
* |
(81 |
/ |
260)
|
= |
-17.44615382 |
| 4 |
30495 |
2391 |
- |
2485 |
= |
-94 |
* |
(88 |
/ |
260)
|
= |
-31.81538457 |
| 5 |
30496 |
2412 |
- |
2528 |
= |
-116 |
* |
(91 |
/ |
260)
|
= |
-40.6 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Lovelia P. Flournoy Elementary
|
-90 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-92
|
-86
|
-73
|
-91
|
-90
|
-432.0 |
-86.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -65.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -107.4
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:
