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 |
| 7 |
9818 |
2430 |
- |
2567 |
= |
-137 |
* |
(220 |
/ |
431)
|
= |
-69.9303944 |
| 8 |
9820 |
2439 |
- |
2586 |
= |
-147 |
* |
(211 |
/ |
431)
|
= |
-71.96519711 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Wawona K-8
|
-142 |
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 |
| 7 |
9894 |
2472 |
- |
2567 |
= |
-95 |
* |
(213 |
/ |
433)
|
= |
-46.73210161 |
| 8 |
9895 |
2456 |
- |
2586 |
= |
-130 |
* |
(220 |
/ |
433)
|
= |
-66.0508082 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Wawona K-8
|
-113 |
Last steps
Compute the average
| 2018 |
2019 |
Sum |
Average |
|
-142
|
-113
|
-255.0 |
-127.5 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -67.5
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -187.5
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:
