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 |
6 |
992837 |
2458 |
- |
2552 |
= |
-94 |
* |
(300 |
/ |
886)
|
= |
-31.82844239 |
7 |
992838 |
2500 |
- |
2567 |
= |
-67 |
* |
(255 |
/ |
886)
|
= |
-19.28329566 |
8 |
992841 |
2507 |
- |
2586 |
= |
-79 |
* |
(331 |
/ |
886)
|
= |
-29.51354396 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Virgil Middle
|
-81 |
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 |
6 |
31359 |
2476 |
- |
2552 |
= |
-76 |
* |
(335 |
/ |
919)
|
= |
-27.70402608 |
7 |
31360 |
2474 |
- |
2567 |
= |
-93 |
* |
(298 |
/ |
919)
|
= |
-30.15669197 |
8 |
31363 |
2535 |
- |
2586 |
= |
-51 |
* |
(286 |
/ |
919)
|
= |
-15.87159953 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Virgil Middle
|
-74 |
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 |
6 |
31919 |
2473 |
- |
2552 |
= |
-79 |
* |
(358 |
/ |
1006)
|
= |
-28.11332007 |
7 |
31922 |
2499 |
- |
2567 |
= |
-68 |
* |
(350 |
/ |
1006)
|
= |
-23.65805163 |
8 |
31924 |
2518 |
- |
2586 |
= |
-68 |
* |
(298 |
/ |
1006)
|
= |
-20.14314115 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Virgil Middle
|
-72 |
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 |
6 |
31957 |
2492 |
- |
2552 |
= |
-60 |
* |
(384 |
/ |
1114)
|
= |
-20.6822262 |
7 |
31959 |
2507 |
- |
2567 |
= |
-60 |
* |
(365 |
/ |
1114)
|
= |
-19.65888684 |
8 |
31961 |
2518 |
- |
2586 |
= |
-68 |
* |
(365 |
/ |
1114)
|
= |
-22.28007175 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Virgil Middle
|
-63 |
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 |
6 |
32134 |
2498 |
- |
2552 |
= |
-54 |
* |
(376 |
/ |
1133)
|
= |
-17.92056485 |
7 |
32135 |
2514 |
- |
2567 |
= |
-53 |
* |
(383 |
/ |
1133)
|
= |
-17.9161518 |
8 |
32136 |
2516 |
- |
2586 |
= |
-70 |
* |
(374 |
/ |
1133)
|
= |
-23.10679609 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Virgil Middle
|
-59 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-81
|
-74
|
-72
|
-63
|
-59
|
-349.0 |
-69.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -45.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -93.8
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: