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 |
926007 |
2419 |
- |
2436 |
= |
-17 |
* |
(121 |
/ |
371)
|
= |
-5.54447438 |
| 4 |
926010 |
2448 |
- |
2485 |
= |
-37 |
* |
(114 |
/ |
371)
|
= |
-11.36927224 |
| 5 |
926011 |
2482 |
- |
2528 |
= |
-46 |
* |
(136 |
/ |
371)
|
= |
-16.86253367 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Lorne Street Elementary
|
-34 |
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 |
29276 |
2429 |
- |
2436 |
= |
-7 |
* |
(114 |
/ |
366)
|
= |
-2.18032786 |
| 4 |
29279 |
2469 |
- |
2485 |
= |
-16 |
* |
(129 |
/ |
366)
|
= |
-5.63934426 |
| 5 |
29280 |
2500 |
- |
2528 |
= |
-28 |
* |
(123 |
/ |
366)
|
= |
-9.40983604 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Lorne Street Elementary
|
-17 |
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 |
29841 |
2426 |
- |
2436 |
= |
-10 |
* |
(102 |
/ |
365)
|
= |
-2.79452054 |
| 4 |
29843 |
2478 |
- |
2485 |
= |
-7 |
* |
(129 |
/ |
365)
|
= |
-2.4739726 |
| 5 |
29845 |
2491 |
- |
2528 |
= |
-37 |
* |
(134 |
/ |
365)
|
= |
-13.58356162 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Lorne Street Elementary
|
-19 |
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 |
29890 |
2446 |
- |
2436 |
= |
10 |
* |
(104 |
/ |
340)
|
= |
3.05882352 |
| 4 |
29892 |
2478 |
- |
2485 |
= |
-7 |
* |
(104 |
/ |
340)
|
= |
-2.14117646 |
| 5 |
29894 |
2499 |
- |
2528 |
= |
-29 |
* |
(132 |
/ |
340)
|
= |
-11.25882353 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Lorne Street Elementary
|
-10 |
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 |
30066 |
2418 |
- |
2436 |
= |
-18 |
* |
(108 |
/ |
323)
|
= |
-6.01857585 |
| 4 |
30067 |
2472 |
- |
2485 |
= |
-13 |
* |
(105 |
/ |
323)
|
= |
-4.22600619 |
| 5 |
30068 |
2497 |
- |
2528 |
= |
-31 |
* |
(110 |
/ |
323)
|
= |
-10.55727553 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Lorne Street Elementary
|
-21 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-34
|
-17
|
-19
|
-10
|
-21
|
-101.0 |
-20.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 3.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -44.2
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:
