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 |
1252017 |
2435 |
- |
2436 |
= |
-1 |
* |
(598 |
/ |
4123) |
= |
-0.14504002 |
4 |
1252018 |
2494 |
- |
2485 |
= |
9 |
* |
(557 |
/ |
4123) |
= |
1.21586224 |
5 |
1252021 |
2513 |
- |
2528 |
= |
-15 |
* |
(593 |
/ |
4123) |
= |
-2.15740965 |
6 |
1252022 |
2529 |
- |
2552 |
= |
-23 |
* |
(604 |
/ |
4123) |
= |
-3.36939121 |
7 |
1252025 |
2558 |
- |
2567 |
= |
-9 |
* |
(612 |
/ |
4123) |
= |
-1.33592045 |
8 |
1252026 |
2580 |
- |
2586 |
= |
-6 |
* |
(594 |
/ |
4123) |
= |
-0.86441911 |
11 |
1252029 |
2594 |
- |
2628 |
= |
-34 |
* |
(565 |
/ |
4123) |
= |
-4.65922869 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Novato Unified
|
-11 |
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 |
39053 |
2438 |
- |
2436 |
= |
2 |
* |
(534 |
/ |
4044) |
= |
0.26409495 |
4 |
39055 |
2480 |
- |
2485 |
= |
-5 |
* |
(603 |
/ |
4044) |
= |
-0.74554896 |
5 |
39056 |
2525 |
- |
2528 |
= |
-3 |
* |
(554 |
/ |
4044) |
= |
-0.41097923 |
6 |
39059 |
2525 |
- |
2552 |
= |
-27 |
* |
(589 |
/ |
4044) |
= |
-3.93249257 |
7 |
39061 |
2567 |
- |
2567 |
= |
0 |
* |
(604 |
/ |
4044) |
= |
0.0 |
8 |
39063 |
2589 |
- |
2586 |
= |
3 |
* |
(620 |
/ |
4044) |
= |
0.45994065 |
11 |
39064 |
2613 |
- |
2628 |
= |
-15 |
* |
(540 |
/ |
4044) |
= |
-2.00296736 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Novato Unified
|
-6 |
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 |
40024 |
2429 |
- |
2436 |
= |
-7 |
* |
(534 |
/ |
4003) |
= |
-0.93379965 |
4 |
40026 |
2478 |
- |
2485 |
= |
-7 |
* |
(541 |
/ |
4003) |
= |
-0.94604047 |
5 |
40027 |
2497 |
- |
2528 |
= |
-31 |
* |
(604 |
/ |
4003) |
= |
-4.67749185 |
6 |
40030 |
2530 |
- |
2552 |
= |
-22 |
* |
(530 |
/ |
4003) |
= |
-2.91281538 |
7 |
40031 |
2562 |
- |
2567 |
= |
-5 |
* |
(588 |
/ |
4003) |
= |
-0.73444916 |
8 |
40033 |
2570 |
- |
2586 |
= |
-16 |
* |
(613 |
/ |
4003) |
= |
-2.45016237 |
11 |
40036 |
2588 |
- |
2628 |
= |
-40 |
* |
(593 |
/ |
4003) |
= |
-5.9255558 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Novato Unified
|
-19 |
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 |
40051 |
2432 |
- |
2436 |
= |
-4 |
* |
(515 |
/ |
3876) |
= |
-0.53147575 |
4 |
40052 |
2473 |
- |
2485 |
= |
-12 |
* |
(524 |
/ |
3876) |
= |
-1.62229102 |
5 |
40055 |
2502 |
- |
2528 |
= |
-26 |
* |
(541 |
/ |
3876) |
= |
-3.62899896 |
6 |
40056 |
2511 |
- |
2552 |
= |
-41 |
* |
(599 |
/ |
3876) |
= |
-6.33617128 |
7 |
40059 |
2572 |
- |
2567 |
= |
5 |
* |
(530 |
/ |
3876) |
= |
0.68369453 |
8 |
40060 |
2569 |
- |
2586 |
= |
-17 |
* |
(589 |
/ |
3876) |
= |
-2.58333333 |
11 |
40062 |
2599 |
- |
2628 |
= |
-29 |
* |
(578 |
/ |
3876) |
= |
-4.3245614 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Novato Unified
|
-18 |
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 |
40208 |
2437 |
- |
2436 |
= |
1 |
* |
(492 |
/ |
3679) |
= |
0.13373199 |
4 |
40209 |
2482 |
- |
2485 |
= |
-3 |
* |
(509 |
/ |
3679) |
= |
-0.41505844 |
5 |
40210 |
2500 |
- |
2528 |
= |
-28 |
* |
(519 |
/ |
3679) |
= |
-3.9499864 |
6 |
40211 |
2525 |
- |
2552 |
= |
-27 |
* |
(546 |
/ |
3679) |
= |
-4.00706711 |
7 |
40212 |
2565 |
- |
2567 |
= |
-2 |
* |
(589 |
/ |
3679) |
= |
-0.3201957 |
8 |
40213 |
2591 |
- |
2586 |
= |
5 |
* |
(535 |
/ |
3679) |
= |
0.72709976 |
11 |
40214 |
2589 |
- |
2628 |
= |
-39 |
* |
(489 |
/ |
3679) |
= |
-5.18374557 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Novato Unified
|
-13 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-11
|
-6
|
-19
|
-18
|
-13
|
-67.0 |
-13.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 1.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -28.4
For the lines, you have the data necessary to plot the chart.