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 |
3383 |
2531 |
- |
2436 |
= |
95 |
* |
(112 |
/ |
448)
|
= |
23.75 |
4 |
3384 |
2568 |
- |
2485 |
= |
83 |
* |
(78 |
/ |
448)
|
= |
14.45089279 |
5 |
3385 |
2592 |
- |
2528 |
= |
64 |
* |
(95 |
/ |
448)
|
= |
13.57142854 |
6 |
3386 |
2620 |
- |
2552 |
= |
68 |
* |
(92 |
/ |
448)
|
= |
13.96428566 |
7 |
3387 |
2663 |
- |
2567 |
= |
96 |
* |
(71 |
/ |
448)
|
= |
15.21428563 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Cottonwood Creek
|
81 |
Last steps
Compute the average
2019 |
Sum |
Average |
81
|
81.0 |
81.0 |
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: