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 |
2967615 |
2376 |
- |
2436 |
= |
-60 |
* |
(250 |
/ |
1493) |
= |
-10.04688546 |
4 |
2967616 |
2415 |
- |
2485 |
= |
-70 |
* |
(202 |
/ |
1493) |
= |
-9.47086399 |
5 |
2967619 |
2437 |
- |
2528 |
= |
-91 |
* |
(215 |
/ |
1493) |
= |
-13.10448758 |
6 |
2967620 |
2463 |
- |
2552 |
= |
-89 |
* |
(244 |
/ |
1493) |
= |
-14.5452109 |
7 |
2967623 |
2463 |
- |
2567 |
= |
-104 |
* |
(217 |
/ |
1493) |
= |
-15.11587407 |
8 |
2967624 |
2465 |
- |
2586 |
= |
-121 |
* |
(181 |
/ |
1493) |
= |
-14.66912246 |
11 |
2967627 |
2557 |
- |
2628 |
= |
-71 |
* |
(184 |
/ |
1493) |
= |
-8.75016745 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Riverbank Unified
|
-86 |
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 |
90793 |
2390 |
- |
2436 |
= |
-46 |
* |
(205 |
/ |
1482) |
= |
-6.36302291 |
4 |
90796 |
2425 |
- |
2485 |
= |
-60 |
* |
(247 |
/ |
1482) |
= |
-9.99999996 |
5 |
90798 |
2432 |
- |
2528 |
= |
-96 |
* |
(200 |
/ |
1482) |
= |
-12.95546554 |
6 |
90800 |
2470 |
- |
2552 |
= |
-82 |
* |
(216 |
/ |
1482) |
= |
-11.95141693 |
7 |
90801 |
2480 |
- |
2567 |
= |
-87 |
* |
(240 |
/ |
1482) |
= |
-14.08906875 |
8 |
90803 |
2478 |
- |
2586 |
= |
-108 |
* |
(208 |
/ |
1482) |
= |
-15.15789472 |
11 |
90806 |
2543 |
- |
2628 |
= |
-85 |
* |
(166 |
/ |
1482) |
= |
-9.52091766 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Riverbank Unified
|
-80 |
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 |
93515 |
2389 |
- |
2436 |
= |
-47 |
* |
(251 |
/ |
1581) |
= |
-7.46173307 |
4 |
93518 |
2419 |
- |
2485 |
= |
-66 |
* |
(207 |
/ |
1581) |
= |
-8.64136621 |
5 |
93520 |
2456 |
- |
2528 |
= |
-72 |
* |
(247 |
/ |
1581) |
= |
-11.24857685 |
6 |
93521 |
2489 |
- |
2552 |
= |
-63 |
* |
(206 |
/ |
1581) |
= |
-8.20872864 |
7 |
93524 |
2490 |
- |
2567 |
= |
-77 |
* |
(222 |
/ |
1581) |
= |
-10.81214419 |
8 |
93526 |
2488 |
- |
2586 |
= |
-98 |
* |
(240 |
/ |
1581) |
= |
-14.87666029 |
11 |
93527 |
2538 |
- |
2628 |
= |
-90 |
* |
(208 |
/ |
1581) |
= |
-11.84060718 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Riverbank Unified
|
-73 |
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 |
93727 |
2402 |
- |
2436 |
= |
-34 |
* |
(227 |
/ |
1546) |
= |
-4.99223802 |
4 |
93728 |
2434 |
- |
2485 |
= |
-51 |
* |
(252 |
/ |
1546) |
= |
-8.31306594 |
5 |
93731 |
2437 |
- |
2528 |
= |
-91 |
* |
(214 |
/ |
1546) |
= |
-12.5963777 |
6 |
93732 |
2499 |
- |
2552 |
= |
-53 |
* |
(240 |
/ |
1546) |
= |
-8.22768433 |
7 |
93735 |
2484 |
- |
2567 |
= |
-83 |
* |
(206 |
/ |
1546) |
= |
-11.05950839 |
8 |
93736 |
2481 |
- |
2586 |
= |
-105 |
* |
(226 |
/ |
1546) |
= |
-15.3492884 |
11 |
93739 |
2502 |
- |
2628 |
= |
-126 |
* |
(181 |
/ |
1546) |
= |
-14.75161708 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Riverbank Unified
|
-75 |
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 |
94361 |
2403 |
- |
2436 |
= |
-33 |
* |
(233 |
/ |
1555) |
= |
-4.94469452 |
4 |
94362 |
2455 |
- |
2485 |
= |
-30 |
* |
(224 |
/ |
1555) |
= |
-4.32154338 |
5 |
94363 |
2457 |
- |
2528 |
= |
-71 |
* |
(248 |
/ |
1555) |
= |
-11.32347263 |
6 |
94364 |
2487 |
- |
2552 |
= |
-65 |
* |
(214 |
/ |
1555) |
= |
-8.94533757 |
7 |
94365 |
2504 |
- |
2567 |
= |
-63 |
* |
(234 |
/ |
1555) |
= |
-9.48038585 |
8 |
94366 |
2519 |
- |
2586 |
= |
-67 |
* |
(202 |
/ |
1555) |
= |
-8.70353691 |
11 |
94367 |
2510 |
- |
2628 |
= |
-118 |
* |
(200 |
/ |
1555) |
= |
-15.17684883 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Riverbank Unified
|
-63 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-86
|
-80
|
-73
|
-75
|
-63
|
-377.0 |
-75.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -51.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -99.4
For the lines, you have the data necessary to plot the chart.