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 |
2125763 |
2487 |
- |
2436 |
= |
51 |
* |
(105 |
/ |
412) |
= |
12.99757277 |
4 |
2125764 |
2517 |
- |
2485 |
= |
32 |
* |
(108 |
/ |
412) |
= |
8.3883495 |
5 |
2125767 |
2527 |
- |
2528 |
= |
-1 |
* |
(86 |
/ |
412) |
= |
-0.20873786 |
6 |
2125768 |
2603 |
- |
2552 |
= |
51 |
* |
(113 |
/ |
412) |
= |
13.98786404 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Cardiff Elementary
|
35 |
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 |
65273 |
2481 |
- |
2436 |
= |
45 |
* |
(109 |
/ |
406) |
= |
12.08128077 |
4 |
65275 |
2516 |
- |
2485 |
= |
31 |
* |
(108 |
/ |
406) |
= |
8.24630541 |
5 |
65277 |
2567 |
- |
2528 |
= |
39 |
* |
(111 |
/ |
406) |
= |
10.66256155 |
6 |
65279 |
2585 |
- |
2552 |
= |
33 |
* |
(78 |
/ |
406) |
= |
6.33990146 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Cardiff Elementary
|
37 |
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 |
67084 |
2495 |
- |
2436 |
= |
59 |
* |
(80 |
/ |
405) |
= |
11.65432098 |
4 |
67087 |
2510 |
- |
2485 |
= |
25 |
* |
(110 |
/ |
405) |
= |
6.79012345 |
5 |
67088 |
2568 |
- |
2528 |
= |
40 |
* |
(109 |
/ |
405) |
= |
10.76543208 |
6 |
67090 |
2610 |
- |
2552 |
= |
58 |
* |
(106 |
/ |
405) |
= |
15.18024691 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Cardiff Elementary
|
44 |
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 |
67181 |
2490 |
- |
2436 |
= |
54 |
* |
(84 |
/ |
386) |
= |
11.75129532 |
4 |
67182 |
2527 |
- |
2485 |
= |
42 |
* |
(83 |
/ |
386) |
= |
9.03108805 |
5 |
67185 |
2550 |
- |
2528 |
= |
22 |
* |
(114 |
/ |
386) |
= |
6.49740931 |
6 |
67186 |
2607 |
- |
2552 |
= |
55 |
* |
(105 |
/ |
386) |
= |
14.96113988 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Cardiff Elementary
|
42 |
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 |
67678 |
2501 |
- |
2436 |
= |
65 |
* |
(100 |
/ |
386) |
= |
16.83937821 |
4 |
67679 |
2536 |
- |
2485 |
= |
51 |
* |
(84 |
/ |
386) |
= |
11.09844558 |
5 |
67680 |
2550 |
- |
2528 |
= |
22 |
* |
(83 |
/ |
386) |
= |
4.73056993 |
6 |
67681 |
2585 |
- |
2552 |
= |
33 |
* |
(119 |
/ |
386) |
= |
10.17357512 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Cardiff Elementary
|
43 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
35
|
37
|
44
|
42
|
43
|
201.0 |
40.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 49.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 31.2
For the lines, you have the data necessary to plot the chart.