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 |
48216 |
2429 |
- |
2436 |
= |
-7 |
* |
(73 |
/ |
232)
|
= |
-2.2025862 |
4 |
48217 |
2433 |
- |
2485 |
= |
-52 |
* |
(47 |
/ |
232)
|
= |
-10.53448271 |
5 |
48218 |
2490 |
- |
2528 |
= |
-38 |
* |
(56 |
/ |
232)
|
= |
-9.17241378 |
6 |
48219 |
2509 |
- |
2552 |
= |
-43 |
* |
(56 |
/ |
232)
|
= |
-10.37931033 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for El Cerrito Elementary
|
-32 |
Last steps
Compute the average
2019 |
Sum |
Average |
-32
|
-32.0 |
-32.0 |
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.
Very last step
The percent of students getting a Free or Reduced Price Meal comes from the following sources: