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 |
900002 |
2400 |
- |
2436 |
= |
-36 |
* |
(123 |
/ |
315)
|
= |
-14.05714284 |
| 4 |
900003 |
2444 |
- |
2485 |
= |
-41 |
* |
(91 |
/ |
315)
|
= |
-11.84444441 |
| 5 |
900006 |
2459 |
- |
2528 |
= |
-69 |
* |
(101 |
/ |
315)
|
= |
-22.12380948 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Erwin Elementary
|
-48 |
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 |
28441 |
2406 |
- |
2436 |
= |
-30 |
* |
(119 |
/ |
339)
|
= |
-10.53097344 |
| 4 |
28442 |
2449 |
- |
2485 |
= |
-36 |
* |
(124 |
/ |
339)
|
= |
-13.16814156 |
| 5 |
28445 |
2470 |
- |
2528 |
= |
-58 |
* |
(96 |
/ |
339)
|
= |
-16.42477872 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Erwin Elementary
|
-40 |
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 |
29008 |
2415 |
- |
2436 |
= |
-21 |
* |
(118 |
/ |
351)
|
= |
-7.05982906 |
| 4 |
29010 |
2450 |
- |
2485 |
= |
-35 |
* |
(110 |
/ |
351)
|
= |
-10.96866096 |
| 5 |
29011 |
2475 |
- |
2528 |
= |
-53 |
* |
(123 |
/ |
351)
|
= |
-18.57264955 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Erwin Elementary
|
-37 |
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 |
29056 |
2428 |
- |
2436 |
= |
-8 |
* |
(106 |
/ |
327)
|
= |
-2.59327217 |
| 4 |
29059 |
2450 |
- |
2485 |
= |
-35 |
* |
(113 |
/ |
327)
|
= |
-12.09480122 |
| 5 |
29061 |
2480 |
- |
2528 |
= |
-48 |
* |
(108 |
/ |
327)
|
= |
-15.85321099 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Erwin Elementary
|
-31 |
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 |
29236 |
2418 |
- |
2436 |
= |
-18 |
* |
(99 |
/ |
312)
|
= |
-5.71153846 |
| 4 |
29237 |
2469 |
- |
2485 |
= |
-16 |
* |
(102 |
/ |
312)
|
= |
-5.23076922 |
| 5 |
29238 |
2473 |
- |
2528 |
= |
-55 |
* |
(111 |
/ |
312)
|
= |
-19.56730765 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Erwin Elementary
|
-31 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-48
|
-40
|
-37
|
-31
|
-31
|
-187.0 |
-37.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -16.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -58.4
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:
