2015
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 |
855047 |
2476 |
- |
2628 |
= |
-152 |
* |
(25 |
/ |
25)
|
= |
-152.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Robert H. Lewis Continuation
|
-152 |
2016
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 |
27050 |
2451 |
- |
2628 |
= |
-177 |
* |
(26 |
/ |
26)
|
= |
-177.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Robert H. Lewis Continuation
|
-177 |
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 |
27629 |
2408 |
- |
2628 |
= |
-220 |
* |
(15 |
/ |
15)
|
= |
-220.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Robert H. Lewis Continuation
|
-220 |
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 |
27676 |
2398 |
- |
2628 |
= |
-230 |
* |
(34 |
/ |
34)
|
= |
-230.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Robert H. Lewis Continuation
|
-230 |
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 |
27860 |
2458 |
- |
2628 |
= |
-170 |
* |
(19 |
/ |
19)
|
= |
-170.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Robert H. Lewis Continuation
|
-170 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-152
|
-177
|
-220
|
-230
|
-170
|
-949.0 |
-189.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -90.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -288.8
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: