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 |
166125 |
2428 |
- |
2436 |
= |
-8 |
* |
(62 |
/ |
376) |
= |
-1.31914894 |
4 |
166126 |
2475 |
- |
2485 |
= |
-10 |
* |
(55 |
/ |
376) |
= |
-1.46276595 |
5 |
166129 |
2529 |
- |
2528 |
= |
1 |
* |
(59 |
/ |
376) |
= |
0.15691489 |
6 |
166130 |
2549 |
- |
2552 |
= |
-3 |
* |
(58 |
/ |
376) |
= |
-0.46276596 |
7 |
166133 |
2579 |
- |
2567 |
= |
12 |
* |
(69 |
/ |
376) |
= |
2.20212766 |
8 |
166134 |
2598 |
- |
2586 |
= |
12 |
* |
(73 |
/ |
376) |
= |
2.32978723 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Vallecito Union
|
1 |
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 |
4961 |
2424 |
- |
2436 |
= |
-12 |
* |
(54 |
/ |
374) |
= |
-1.73262031 |
4 |
4964 |
2472 |
- |
2485 |
= |
-13 |
* |
(65 |
/ |
374) |
= |
-2.25935828 |
5 |
4965 |
2524 |
- |
2528 |
= |
-4 |
* |
(58 |
/ |
374) |
= |
-0.62032085 |
6 |
4968 |
2580 |
- |
2552 |
= |
28 |
* |
(58 |
/ |
374) |
= |
4.34224596 |
7 |
4969 |
2555 |
- |
2567 |
= |
-12 |
* |
(69 |
/ |
374) |
= |
-2.21390374 |
8 |
4971 |
2611 |
- |
2586 |
= |
25 |
* |
(70 |
/ |
374) |
= |
4.67914438 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Vallecito Union
|
2 |
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 |
5055 |
2445 |
- |
2436 |
= |
9 |
* |
(62 |
/ |
383) |
= |
1.45691906 |
4 |
5058 |
2479 |
- |
2485 |
= |
-6 |
* |
(53 |
/ |
383) |
= |
-0.83028721 |
5 |
5059 |
2499 |
- |
2528 |
= |
-29 |
* |
(65 |
/ |
383) |
= |
-4.921671 |
6 |
5062 |
2559 |
- |
2552 |
= |
7 |
* |
(68 |
/ |
383) |
= |
1.24281984 |
7 |
5063 |
2575 |
- |
2567 |
= |
8 |
* |
(65 |
/ |
383) |
= |
1.35770234 |
8 |
5065 |
2586 |
- |
2586 |
= |
0 |
* |
(70 |
/ |
383) |
= |
0.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Vallecito Union
|
-2 |
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 |
5043 |
2434 |
- |
2436 |
= |
-2 |
* |
(61 |
/ |
376) |
= |
-0.32446808 |
4 |
5046 |
2480 |
- |
2485 |
= |
-5 |
* |
(62 |
/ |
376) |
= |
-0.82446809 |
5 |
5047 |
2500 |
- |
2528 |
= |
-28 |
* |
(52 |
/ |
376) |
= |
-3.87234042 |
6 |
5050 |
2534 |
- |
2552 |
= |
-18 |
* |
(68 |
/ |
376) |
= |
-3.25531913 |
7 |
5051 |
2570 |
- |
2567 |
= |
3 |
* |
(67 |
/ |
376) |
= |
0.53457447 |
8 |
5054 |
2590 |
- |
2586 |
= |
4 |
* |
(66 |
/ |
376) |
= |
0.70212766 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Vallecito Union
|
-7 |
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 |
5082 |
2442 |
- |
2436 |
= |
6 |
* |
(50 |
/ |
373) |
= |
0.80428954 |
4 |
5083 |
2476 |
- |
2485 |
= |
-9 |
* |
(66 |
/ |
373) |
= |
-1.59249329 |
5 |
5084 |
2510 |
- |
2528 |
= |
-18 |
* |
(63 |
/ |
373) |
= |
-3.04021447 |
6 |
5085 |
2552 |
- |
2552 |
= |
0 |
* |
(58 |
/ |
373) |
= |
0.0 |
7 |
5086 |
2540 |
- |
2567 |
= |
-27 |
* |
(70 |
/ |
373) |
= |
-5.06702412 |
8 |
5087 |
2577 |
- |
2586 |
= |
-9 |
* |
(66 |
/ |
373) |
= |
-1.59249329 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Vallecito Union
|
-10 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
1
|
2
|
-2
|
-7
|
-10
|
-16.0 |
-3.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 11.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -18.2
For the lines, you have the data necessary to plot the chart.