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 |
50648 |
2476 |
- |
2436 |
= |
40 |
* |
(61 |
/ |
218)
|
= |
11.19266052 |
| 4 |
50651 |
2497 |
- |
2485 |
= |
12 |
* |
(49 |
/ |
218)
|
= |
2.6972477 |
| 5 |
50652 |
2557 |
- |
2528 |
= |
29 |
* |
(60 |
/ |
218)
|
= |
7.98165135 |
| 6 |
50655 |
2612 |
- |
2552 |
= |
60 |
* |
(48 |
/ |
218)
|
= |
13.21100916 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Eastwood Elementary
|
35 |
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 |
50856 |
2494 |
- |
2436 |
= |
58 |
* |
(72 |
/ |
292)
|
= |
14.30136984 |
| 4 |
50857 |
2507 |
- |
2485 |
= |
22 |
* |
(82 |
/ |
292)
|
= |
6.17808217 |
| 5 |
50858 |
2536 |
- |
2528 |
= |
8 |
* |
(55 |
/ |
292)
|
= |
1.50684931 |
| 6 |
50859 |
2618 |
- |
2552 |
= |
66 |
* |
(83 |
/ |
292)
|
= |
18.76027395 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Eastwood Elementary
|
41 |
Last steps
Compute the average
| 2018 |
2019 |
Sum |
Average |
|
35
|
41
|
76.0 |
38.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 50.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 26.0
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:
