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 |
1298394 |
2401 |
- |
2436 |
= |
-35 |
* |
(20 |
/ |
104) |
= |
-6.73076922 |
4 |
1298397 |
2472 |
- |
2485 |
= |
-13 |
* |
(20 |
/ |
104) |
= |
-2.5 |
5 |
1298398 |
2497 |
- |
2528 |
= |
-31 |
* |
(13 |
/ |
104) |
= |
-3.875 |
6 |
1298401 |
2493 |
- |
2552 |
= |
-59 |
* |
(19 |
/ |
104) |
= |
-10.77884611 |
7 |
1298402 |
2500 |
- |
2567 |
= |
-67 |
* |
(17 |
/ |
104) |
= |
-10.95192305 |
8 |
1298405 |
2511 |
- |
2586 |
= |
-75 |
* |
(15 |
/ |
104) |
= |
-10.81730768 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for El Nido Elementary
|
-46 |
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 |
40714 |
2401 |
- |
2436 |
= |
-35 |
* |
(20 |
/ |
102) |
= |
-6.86274509 |
4 |
40717 |
2446 |
- |
2485 |
= |
-39 |
* |
(16 |
/ |
102) |
= |
-6.11764706 |
5 |
40719 |
2486 |
- |
2528 |
= |
-42 |
* |
(19 |
/ |
102) |
= |
-7.82352938 |
6 |
40721 |
2481 |
- |
2552 |
= |
-71 |
* |
(11 |
/ |
102) |
= |
-7.65686273 |
7 |
40723 |
2494 |
- |
2567 |
= |
-73 |
* |
(19 |
/ |
102) |
= |
-13.59803916 |
8 |
40724 |
2538 |
- |
2586 |
= |
-48 |
* |
(17 |
/ |
102) |
= |
-7.99999997 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for El Nido Elementary
|
-50 |
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 |
41718 |
2406 |
- |
2436 |
= |
-30 |
* |
(17 |
/ |
107) |
= |
-4.76635512 |
4 |
41719 |
2455 |
- |
2485 |
= |
-30 |
* |
(23 |
/ |
107) |
= |
-6.44859813 |
5 |
41722 |
2455 |
- |
2528 |
= |
-73 |
* |
(17 |
/ |
107) |
= |
-11.59813079 |
6 |
41723 |
2526 |
- |
2552 |
= |
-26 |
* |
(18 |
/ |
107) |
= |
-4.37383177 |
7 |
41725 |
2508 |
- |
2567 |
= |
-59 |
* |
(11 |
/ |
107) |
= |
-6.06542054 |
8 |
41728 |
2470 |
- |
2586 |
= |
-116 |
* |
(21 |
/ |
107) |
= |
-22.76635511 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for El Nido Elementary
|
-56 |
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 |
41750 |
2399 |
- |
2436 |
= |
-37 |
* |
(26 |
/ |
116) |
= |
-8.29310345 |
4 |
41753 |
2471 |
- |
2485 |
= |
-14 |
* |
(18 |
/ |
116) |
= |
-2.17241378 |
5 |
41754 |
2447 |
- |
2528 |
= |
-81 |
* |
(23 |
/ |
116) |
= |
-16.06034482 |
6 |
41757 |
2489 |
- |
2552 |
= |
-63 |
* |
(18 |
/ |
116) |
= |
-9.77586202 |
7 |
41758 |
2496 |
- |
2567 |
= |
-71 |
* |
(20 |
/ |
116) |
= |
-12.2413793 |
8 |
41761 |
2531 |
- |
2586 |
= |
-55 |
* |
(11 |
/ |
116) |
= |
-5.21551723 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for El Nido Elementary
|
-54 |
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 |
41899 |
2362 |
- |
2436 |
= |
-74 |
* |
(13 |
/ |
106) |
= |
-9.07547167 |
4 |
41900 |
2482 |
- |
2485 |
= |
-3 |
* |
(23 |
/ |
106) |
= |
-0.6509434 |
5 |
41901 |
2488 |
- |
2528 |
= |
-40 |
* |
(16 |
/ |
106) |
= |
-6.03773584 |
6 |
41902 |
2491 |
- |
2552 |
= |
-61 |
* |
(22 |
/ |
106) |
= |
-12.66037731 |
7 |
41903 |
2479 |
- |
2567 |
= |
-88 |
* |
(15 |
/ |
106) |
= |
-12.4528301 |
8 |
41904 |
2553 |
- |
2586 |
= |
-33 |
* |
(17 |
/ |
106) |
= |
-5.29245281 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for El Nido Elementary
|
-46 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-46
|
-50
|
-56
|
-54
|
-46
|
-252.0 |
-50.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -38.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -62.4
For the lines, you have the data necessary to plot the chart.