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 |
64446 |
2462 |
- |
2436 |
= |
26 |
* |
(74 |
/ |
304)
|
= |
6.32894735 |
| 4 |
64447 |
2492 |
- |
2485 |
= |
7 |
* |
(80 |
/ |
304)
|
= |
1.84210526 |
| 5 |
64450 |
2503 |
- |
2528 |
= |
-25 |
* |
(68 |
/ |
304)
|
= |
-5.59210525 |
| 6 |
64451 |
2539 |
- |
2552 |
= |
-13 |
* |
(82 |
/ |
304)
|
= |
-3.50657895 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Birch Grove Primary
|
-1 |
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 |
1719 |
2473 |
- |
2436 |
= |
37 |
* |
(81 |
/ |
291)
|
= |
10.29896906 |
| 4 |
1721 |
2483 |
- |
2485 |
= |
-2 |
* |
(69 |
/ |
291)
|
= |
-0.4742268 |
| 5 |
1724 |
2552 |
- |
2528 |
= |
24 |
* |
(73 |
/ |
291)
|
= |
6.02061854 |
| 6 |
1726 |
2573 |
- |
2552 |
= |
21 |
* |
(68 |
/ |
291)
|
= |
4.90721648 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Birch Grove Primary
|
21 |
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 |
| 5 |
1775 |
0 |
- |
2528 |
= |
|
* |
(0 |
/ |
0)
|
= |
|
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Birch Grove Primary
|
|
Last steps
Compute the average
| 2015 |
2016 |
2017 |
Sum |
Average |
|
-1
|
21
|
|
20.0 |
6.7 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 55.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -35.0
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:
