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 |
1398665 |
2429 |
- |
2436 |
= |
-7 |
* |
(93 |
/ |
572) |
= |
-1.13811188 |
4 |
1398666 |
2491 |
- |
2485 |
= |
6 |
* |
(77 |
/ |
572) |
= |
0.8076923 |
5 |
1398669 |
2499 |
- |
2528 |
= |
-29 |
* |
(89 |
/ |
572) |
= |
-4.51223775 |
6 |
1398670 |
2513 |
- |
2552 |
= |
-39 |
* |
(114 |
/ |
572) |
= |
-7.77272726 |
7 |
1398673 |
2535 |
- |
2567 |
= |
-32 |
* |
(101 |
/ |
572) |
= |
-5.65034963 |
8 |
1398674 |
2523 |
- |
2586 |
= |
-63 |
* |
(98 |
/ |
572) |
= |
-10.79370627 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Nevada City Elementary
|
-29 |
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 |
44102 |
2464 |
- |
2436 |
= |
28 |
* |
(94 |
/ |
593) |
= |
4.43844856 |
4 |
44105 |
2457 |
- |
2485 |
= |
-28 |
* |
(105 |
/ |
593) |
= |
-4.95784148 |
5 |
44107 |
2507 |
- |
2528 |
= |
-21 |
* |
(87 |
/ |
593) |
= |
-3.08094434 |
6 |
44109 |
2516 |
- |
2552 |
= |
-36 |
* |
(89 |
/ |
593) |
= |
-5.40303541 |
7 |
44111 |
2527 |
- |
2567 |
= |
-40 |
* |
(111 |
/ |
593) |
= |
-7.48735244 |
8 |
44113 |
2559 |
- |
2586 |
= |
-27 |
* |
(107 |
/ |
593) |
= |
-4.8718381 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Nevada City Elementary
|
-21 |
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 |
45171 |
2439 |
- |
2436 |
= |
3 |
* |
(92 |
/ |
564) |
= |
0.4893617 |
4 |
45173 |
2510 |
- |
2485 |
= |
25 |
* |
(87 |
/ |
564) |
= |
3.85638298 |
5 |
45176 |
2474 |
- |
2528 |
= |
-54 |
* |
(103 |
/ |
564) |
= |
-9.8617021 |
6 |
45177 |
2528 |
- |
2552 |
= |
-24 |
* |
(81 |
/ |
564) |
= |
-3.4468085 |
7 |
45180 |
2527 |
- |
2567 |
= |
-40 |
* |
(92 |
/ |
564) |
= |
-6.52482268 |
8 |
45182 |
2536 |
- |
2586 |
= |
-50 |
* |
(109 |
/ |
564) |
= |
-9.66312055 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Nevada City Elementary
|
-25 |
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 |
45190 |
2447 |
- |
2436 |
= |
11 |
* |
(83 |
/ |
529) |
= |
1.72589791 |
4 |
45193 |
2509 |
- |
2485 |
= |
24 |
* |
(87 |
/ |
529) |
= |
3.94706993 |
5 |
45194 |
2507 |
- |
2528 |
= |
-21 |
* |
(98 |
/ |
529) |
= |
-3.89035916 |
6 |
45197 |
2509 |
- |
2552 |
= |
-43 |
* |
(93 |
/ |
529) |
= |
-7.55954629 |
7 |
45198 |
2535 |
- |
2567 |
= |
-32 |
* |
(87 |
/ |
529) |
= |
-5.2627599 |
8 |
45201 |
2569 |
- |
2586 |
= |
-17 |
* |
(81 |
/ |
529) |
= |
-2.60302456 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Nevada City Elementary
|
-14 |
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 |
45323 |
2469 |
- |
2436 |
= |
33 |
* |
(71 |
/ |
495) |
= |
4.73333332 |
4 |
45324 |
2502 |
- |
2485 |
= |
17 |
* |
(87 |
/ |
495) |
= |
2.98787878 |
5 |
45325 |
2531 |
- |
2528 |
= |
3 |
* |
(82 |
/ |
495) |
= |
0.4969697 |
6 |
45326 |
2538 |
- |
2552 |
= |
-14 |
* |
(89 |
/ |
495) |
= |
-2.51717171 |
7 |
45327 |
2551 |
- |
2567 |
= |
-16 |
* |
(87 |
/ |
495) |
= |
-2.8121212 |
8 |
45328 |
2583 |
- |
2586 |
= |
-3 |
* |
(79 |
/ |
495) |
= |
-0.47878788 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Nevada City Elementary
|
2 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-29
|
-21
|
-25
|
-14
|
2
|
-87.0 |
-17.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 18.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -53.4
For the lines, you have the data necessary to plot the chart.