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 |
980872 |
2473 |
- |
2552 |
= |
-79 |
* |
(527 |
/ |
1577)
|
= |
-26.40012678 |
7 |
980874 |
2465 |
- |
2567 |
= |
-102 |
* |
(562 |
/ |
1577)
|
= |
-36.35003162 |
8 |
980877 |
2488 |
- |
2586 |
= |
-98 |
* |
(488 |
/ |
1577)
|
= |
-30.32593526 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Richard E. Byrd Middle
|
-93 |
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 |
31038 |
2478 |
- |
2552 |
= |
-74 |
* |
(464 |
/ |
1567)
|
= |
-21.91193361 |
7 |
31040 |
2484 |
- |
2567 |
= |
-83 |
* |
(540 |
/ |
1567)
|
= |
-28.60242499 |
8 |
31042 |
2497 |
- |
2586 |
= |
-89 |
* |
(563 |
/ |
1567)
|
= |
-31.97638796 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Richard E. Byrd Middle
|
-82 |
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 |
31601 |
2476 |
- |
2552 |
= |
-76 |
* |
(462 |
/ |
1464)
|
= |
-23.98360652 |
7 |
31604 |
2475 |
- |
2567 |
= |
-92 |
* |
(461 |
/ |
1464)
|
= |
-28.96994532 |
8 |
31605 |
2495 |
- |
2586 |
= |
-91 |
* |
(541 |
/ |
1464)
|
= |
-33.62773223 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Richard E. Byrd Middle
|
-87 |
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 |
31646 |
2461 |
- |
2552 |
= |
-91 |
* |
(519 |
/ |
1412)
|
= |
-33.44830025 |
7 |
31648 |
2476 |
- |
2567 |
= |
-91 |
* |
(452 |
/ |
1412)
|
= |
-29.13031157 |
8 |
31650 |
2492 |
- |
2586 |
= |
-94 |
* |
(441 |
/ |
1412)
|
= |
-29.35835692 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Richard E. Byrd Middle
|
-92 |
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 |
31824 |
2485 |
- |
2552 |
= |
-67 |
* |
(414 |
/ |
1329)
|
= |
-20.87133181 |
7 |
31825 |
2486 |
- |
2567 |
= |
-81 |
* |
(484 |
/ |
1329)
|
= |
-29.49887128 |
8 |
31826 |
2492 |
- |
2586 |
= |
-94 |
* |
(431 |
/ |
1329)
|
= |
-30.48457478 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Richard E. Byrd Middle
|
-81 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-93
|
-82
|
-87
|
-92
|
-81
|
-435.0 |
-87.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -72.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -102.0
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: