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 |
| 11 |
27301 |
2513 |
- |
2628 |
= |
-115 |
* |
(188 |
/ |
188)
|
= |
-115.0 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for NAVA College Preparatory Academy
|
-115 |
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 |
| 11 |
27255 |
2501 |
- |
2628 |
= |
-127 |
* |
(136 |
/ |
136)
|
= |
-127.0 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for NAVA College Preparatory Academy
|
-127 |
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 |
| 11 |
27354 |
2511 |
- |
2628 |
= |
-117 |
* |
(110 |
/ |
110)
|
= |
-117.0 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for NAVA College Preparatory Academy
|
-117 |
Last steps
Compute the average
| 2017 |
2018 |
2019 |
Sum |
Average |
|
-115
|
-127
|
-117
|
-359.0 |
-119.7 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -101.666666666666666667
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -137.666666666666666667
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:
