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 |
74401 |
2392 |
- |
2436 |
= |
-44 |
* |
(12 |
/ |
65) |
= |
-8.1230769 |
4 |
74402 |
0 |
- |
2485 |
= |
|
* |
(6 |
/ |
65) |
= |
|
5 |
74403 |
0 |
- |
2528 |
= |
|
* |
(10 |
/ |
65) |
= |
|
6 |
74404 |
0 |
- |
2552 |
= |
|
* |
(10 |
/ |
65) |
= |
|
7 |
74405 |
2481 |
- |
2567 |
= |
-86 |
* |
(11 |
/ |
65) |
= |
-14.55384613 |
8 |
74406 |
2470 |
- |
2586 |
= |
-116 |
* |
(13 |
/ |
65) |
= |
-23.2 |
11 |
74407 |
0 |
- |
2628 |
= |
|
* |
(0 |
/ |
65) |
= |
|
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for SBE - Vista Springs Charter
|
-46 |
Last steps
Compute the average
2019 |
Sum |
Average |
-46
|
-46.0 |
-46.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average:
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average:
For the lines, you have the data necessary to plot the chart.