2017
| 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 |
41947 |
2451 |
- |
2567 |
= |
-116 |
* |
(336 |
/ |
681)
|
= |
-57.23348012 |
| 8 |
41949 |
2457 |
- |
2586 |
= |
-129 |
* |
(345 |
/ |
681)
|
= |
-65.35242284 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Creekside Junior High
|
-123 |
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 |
41965 |
2450 |
- |
2567 |
= |
-117 |
* |
(441 |
/ |
765)
|
= |
-67.4470588 |
| 8 |
41966 |
2451 |
- |
2586 |
= |
-135 |
* |
(324 |
/ |
765)
|
= |
-57.17647049 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Creekside Junior High
|
-125 |
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 |
42109 |
2463 |
- |
2567 |
= |
-104 |
* |
(436 |
/ |
885)
|
= |
-51.23615817 |
| 8 |
42110 |
2486 |
- |
2586 |
= |
-100 |
* |
(449 |
/ |
885)
|
= |
-50.7344632 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Creekside Junior High
|
-102 |
Last steps
Compute the average
| 2017 |
2018 |
2019 |
Sum |
Average |
|
-123
|
-125
|
-102
|
-350.0 |
-116.7 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -80.666666666666666667
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -152.666666666666666667
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:
