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 |
3 |
737931 |
2376 |
- |
2436 |
= |
-60 |
* |
(1582 |
/ |
9177) |
= |
-10.3432494 |
4 |
737934 |
2400 |
- |
2485 |
= |
-85 |
* |
(1488 |
/ |
9177) |
= |
-13.78228174 |
5 |
737935 |
2422 |
- |
2528 |
= |
-106 |
* |
(1592 |
/ |
9177) |
= |
-18.38858013 |
6 |
737938 |
2446 |
- |
2552 |
= |
-106 |
* |
(1461 |
/ |
9177) |
= |
-16.87544942 |
7 |
737939 |
2465 |
- |
2567 |
= |
-102 |
* |
(1482 |
/ |
9177) |
= |
-16.47204967 |
8 |
737942 |
2472 |
- |
2586 |
= |
-114 |
* |
(1572 |
/ |
9177) |
= |
-19.52795023 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Lancaster Elementary
|
-95 |
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 |
3 |
23231 |
2386 |
- |
2436 |
= |
-50 |
* |
(1550 |
/ |
9194) |
= |
-8.42941045 |
4 |
23233 |
2410 |
- |
2485 |
= |
-75 |
* |
(1590 |
/ |
9194) |
= |
-12.97041548 |
5 |
23235 |
2423 |
- |
2528 |
= |
-105 |
* |
(1509 |
/ |
9194) |
= |
-17.2335218 |
6 |
23237 |
2449 |
- |
2552 |
= |
-103 |
* |
(1579 |
/ |
9194) |
= |
-17.68947132 |
7 |
23238 |
2472 |
- |
2567 |
= |
-95 |
* |
(1450 |
/ |
9194) |
= |
-14.98259735 |
8 |
23241 |
2483 |
- |
2586 |
= |
-103 |
* |
(1516 |
/ |
9194) |
= |
-16.98368494 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Lancaster Elementary
|
-88 |
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 |
3 |
23691 |
2388 |
- |
2436 |
= |
-48 |
* |
(1534 |
/ |
9118) |
= |
-8.0754551 |
4 |
23693 |
2413 |
- |
2485 |
= |
-72 |
* |
(1541 |
/ |
9118) |
= |
-12.16845799 |
5 |
23695 |
2428 |
- |
2528 |
= |
-100 |
* |
(1565 |
/ |
9118) |
= |
-17.1638517 |
6 |
23696 |
2446 |
- |
2552 |
= |
-106 |
* |
(1462 |
/ |
9118) |
= |
-16.99627108 |
7 |
23699 |
2456 |
- |
2567 |
= |
-111 |
* |
(1537 |
/ |
9118) |
= |
-18.71101115 |
8 |
23701 |
2477 |
- |
2586 |
= |
-109 |
* |
(1479 |
/ |
9118) |
= |
-17.68052202 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Lancaster Elementary
|
-91 |
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 |
3 |
23708 |
2384 |
- |
2436 |
= |
-52 |
* |
(1441 |
/ |
8929) |
= |
-8.39198116 |
4 |
23710 |
2420 |
- |
2485 |
= |
-65 |
* |
(1512 |
/ |
8929) |
= |
-11.00683162 |
5 |
23712 |
2435 |
- |
2528 |
= |
-93 |
* |
(1555 |
/ |
8929) |
= |
-16.19610252 |
6 |
23714 |
2448 |
- |
2552 |
= |
-104 |
* |
(1497 |
/ |
8929) |
= |
-17.43621901 |
7 |
23716 |
2451 |
- |
2567 |
= |
-116 |
* |
(1417 |
/ |
8929) |
= |
-18.40878031 |
8 |
23718 |
2466 |
- |
2586 |
= |
-120 |
* |
(1507 |
/ |
8929) |
= |
-20.25310776 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Lancaster Elementary
|
-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 |
3 |
23885 |
2385 |
- |
2436 |
= |
-51 |
* |
(1590 |
/ |
9100) |
= |
-8.91098897 |
4 |
23886 |
2420 |
- |
2485 |
= |
-65 |
* |
(1452 |
/ |
9100) |
= |
-10.37142854 |
5 |
23887 |
2437 |
- |
2528 |
= |
-91 |
* |
(1574 |
/ |
9100) |
= |
-15.73999991 |
6 |
23888 |
2451 |
- |
2552 |
= |
-101 |
* |
(1549 |
/ |
9100) |
= |
-17.19219778 |
7 |
23889 |
2469 |
- |
2567 |
= |
-98 |
* |
(1510 |
/ |
9100) |
= |
-16.26153837 |
8 |
23890 |
2463 |
- |
2586 |
= |
-123 |
* |
(1425 |
/ |
9100) |
= |
-19.26098894 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Lancaster Elementary
|
-88 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-95
|
-88
|
-91
|
-92
|
-88
|
-454.0 |
-90.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -84.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -96.8
For the lines, you have the data necessary to plot the chart.