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 |
920640 |
2380 |
- |
2436 |
= |
-56 |
* |
(96 |
/ |
298)
|
= |
-18.04026846 |
| 4 |
920643 |
2414 |
- |
2485 |
= |
-71 |
* |
(104 |
/ |
298)
|
= |
-24.77852345 |
| 5 |
920644 |
2422 |
- |
2528 |
= |
-106 |
* |
(98 |
/ |
298)
|
= |
-34.85906036 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Langdon Avenue Elementary
|
-78 |
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 |
29104 |
2387 |
- |
2436 |
= |
-49 |
* |
(88 |
/ |
284)
|
= |
-15.18309855 |
| 4 |
29106 |
2419 |
- |
2485 |
= |
-66 |
* |
(93 |
/ |
284)
|
= |
-21.61267601 |
| 5 |
29109 |
2422 |
- |
2528 |
= |
-106 |
* |
(103 |
/ |
284)
|
= |
-38.44366194 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Langdon Avenue Elementary
|
-75 |
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 |
29669 |
2350 |
- |
2436 |
= |
-86 |
* |
(92 |
/ |
272)
|
= |
-29.08823528 |
| 4 |
29671 |
2410 |
- |
2485 |
= |
-75 |
* |
(91 |
/ |
272)
|
= |
-25.09191173 |
| 5 |
29673 |
2412 |
- |
2528 |
= |
-116 |
* |
(89 |
/ |
272)
|
= |
-37.95588231 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Langdon Avenue Elementary
|
-92 |
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 |
29719 |
2401 |
- |
2436 |
= |
-35 |
* |
(88 |
/ |
270)
|
= |
-11.40740738 |
| 4 |
29721 |
2401 |
- |
2485 |
= |
-84 |
* |
(94 |
/ |
270)
|
= |
-29.24444443 |
| 5 |
29723 |
2405 |
- |
2528 |
= |
-123 |
* |
(88 |
/ |
270)
|
= |
-40.08888878 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Langdon Avenue Elementary
|
-81 |
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 |
29894 |
2375 |
- |
2436 |
= |
-61 |
* |
(87 |
/ |
269)
|
= |
-19.72862451 |
| 4 |
29895 |
2415 |
- |
2485 |
= |
-70 |
* |
(91 |
/ |
269)
|
= |
-23.68029734 |
| 5 |
29896 |
2419 |
- |
2528 |
= |
-109 |
* |
(91 |
/ |
269)
|
= |
-36.87360586 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Langdon Avenue Elementary
|
-80 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-78
|
-75
|
-92
|
-81
|
-80
|
-406.0 |
-81.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -63.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -99.2
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:
