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 |
990081 |
2515 |
- |
2552 |
= |
-37 |
* |
(509 |
/ |
1571)
|
= |
-11.98790576 |
7 |
990082 |
2520 |
- |
2567 |
= |
-47 |
* |
(513 |
/ |
1571)
|
= |
-15.34754929 |
8 |
990085 |
2550 |
- |
2586 |
= |
-36 |
* |
(549 |
/ |
1571)
|
= |
-12.58052195 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for George K. Porter Middle
|
-40 |
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 |
31287 |
2505 |
- |
2552 |
= |
-47 |
* |
(551 |
/ |
1581)
|
= |
-16.38013911 |
7 |
31289 |
2526 |
- |
2567 |
= |
-41 |
* |
(515 |
/ |
1581)
|
= |
-13.3554712 |
8 |
31291 |
2538 |
- |
2586 |
= |
-48 |
* |
(515 |
/ |
1581)
|
= |
-15.6356736 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for George K. Porter Middle
|
-45 |
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 |
31847 |
2512 |
- |
2552 |
= |
-40 |
* |
(530 |
/ |
1598)
|
= |
-13.2665832 |
7 |
31849 |
2527 |
- |
2567 |
= |
-40 |
* |
(548 |
/ |
1598)
|
= |
-13.7171464 |
8 |
31852 |
2541 |
- |
2586 |
= |
-45 |
* |
(520 |
/ |
1598)
|
= |
-14.64330411 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for George K. Porter Middle
|
-42 |
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 |
31884 |
2535 |
- |
2552 |
= |
-17 |
* |
(480 |
/ |
1518)
|
= |
-5.37549406 |
7 |
31886 |
2545 |
- |
2567 |
= |
-22 |
* |
(499 |
/ |
1518)
|
= |
-7.23188404 |
8 |
31888 |
2543 |
- |
2586 |
= |
-43 |
* |
(539 |
/ |
1518)
|
= |
-15.26811591 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for George K. Porter Middle
|
-28 |
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 |
32062 |
2540 |
- |
2552 |
= |
-12 |
* |
(405 |
/ |
1368)
|
= |
-3.55263157 |
7 |
32063 |
2553 |
- |
2567 |
= |
-14 |
* |
(471 |
/ |
1368)
|
= |
-4.82017543 |
8 |
32064 |
2553 |
- |
2586 |
= |
-33 |
* |
(492 |
/ |
1368)
|
= |
-11.86842103 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for George K. Porter Middle
|
-20 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-40
|
-45
|
-42
|
-28
|
-20
|
-175.0 |
-35.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -5.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -65.0
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: