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 |
15824 |
2438 |
- |
2436 |
= |
2 |
* |
(100 |
/ |
390)
|
= |
0.51282051 |
| 4 |
15825 |
2451 |
- |
2485 |
= |
-34 |
* |
(94 |
/ |
390)
|
= |
-8.19487179 |
| 5 |
15826 |
2475 |
- |
2528 |
= |
-53 |
* |
(101 |
/ |
390)
|
= |
-13.72564097 |
| 6 |
15827 |
2491 |
- |
2552 |
= |
-61 |
* |
(95 |
/ |
390)
|
= |
-14.85897432 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Dolores S. Whitley Elementary
|
-36 |
Last steps
Compute the average
| 2019 |
Sum |
Average |
|
-36
|
-36.0 |
-36.0 |
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:
