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 |
871437 |
2366 |
- |
2436 |
= |
-70 |
* |
(49 |
/ |
164)
|
= |
-20.91463409 |
| 4 |
871438 |
2414 |
- |
2485 |
= |
-71 |
* |
(43 |
/ |
164)
|
= |
-18.61585359 |
| 5 |
871441 |
2417 |
- |
2528 |
= |
-111 |
* |
(40 |
/ |
164)
|
= |
-27.07317073 |
| 6 |
871442 |
2439 |
- |
2552 |
= |
-113 |
* |
(32 |
/ |
164)
|
= |
-22.04878046 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Annandale Elementary
|
-89 |
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 |
27567 |
2383 |
- |
2436 |
= |
-53 |
* |
(33 |
/ |
143)
|
= |
-12.23076919 |
| 4 |
27568 |
2404 |
- |
2485 |
= |
-81 |
* |
(46 |
/ |
143)
|
= |
-26.055944 |
| 5 |
27570 |
2417 |
- |
2528 |
= |
-111 |
* |
(38 |
/ |
143)
|
= |
-29.49650342 |
| 6 |
27573 |
2478 |
- |
2552 |
= |
-74 |
* |
(26 |
/ |
143)
|
= |
-13.45454539 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Annandale Elementary
|
-81 |
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 |
28140 |
2393 |
- |
2436 |
= |
-43 |
* |
(31 |
/ |
98)
|
= |
-13.60204079 |
| 4 |
28142 |
2419 |
- |
2485 |
= |
-66 |
* |
(28 |
/ |
98)
|
= |
-18.85714281 |
| 5 |
28144 |
2428 |
- |
2528 |
= |
-100 |
* |
(39 |
/ |
98)
|
= |
-39.7959183 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Annandale Elementary
|
-72 |
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 |
28190 |
2391 |
- |
2436 |
= |
-45 |
* |
(29 |
/ |
80)
|
= |
-16.3125 |
| 4 |
28193 |
2401 |
- |
2485 |
= |
-84 |
* |
(27 |
/ |
80)
|
= |
-28.35 |
| 5 |
28194 |
2424 |
- |
2528 |
= |
-104 |
* |
(24 |
/ |
80)
|
= |
-31.2 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Annandale Elementary
|
-76 |
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 |
28370 |
2356 |
- |
2436 |
= |
-80 |
* |
(26 |
/ |
71)
|
= |
-29.29577464 |
| 4 |
28371 |
2440 |
- |
2485 |
= |
-45 |
* |
(23 |
/ |
71)
|
= |
-14.57746475 |
| 5 |
28372 |
2460 |
- |
2528 |
= |
-68 |
* |
(22 |
/ |
71)
|
= |
-21.07042247 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Annandale Elementary
|
-65 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-89
|
-81
|
-72
|
-76
|
-65
|
-383.0 |
-76.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -49.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -103.6
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:
