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 |
2218983 |
2430 |
- |
2436 |
= |
-6 |
* |
(8768 |
/ |
53063) |
= |
-0.99142528 |
4 |
2218984 |
2469 |
- |
2485 |
= |
-16 |
* |
(8708 |
/ |
53063) |
= |
-2.62570906 |
5 |
2218987 |
2499 |
- |
2528 |
= |
-29 |
* |
(8427 |
/ |
53063) |
= |
-4.6055255 |
6 |
2218988 |
2525 |
- |
2552 |
= |
-27 |
* |
(7257 |
/ |
53063) |
= |
-3.69257297 |
7 |
2218991 |
2529 |
- |
2567 |
= |
-38 |
* |
(6939 |
/ |
53063) |
= |
-4.96922523 |
8 |
2218992 |
2549 |
- |
2586 |
= |
-37 |
* |
(7049 |
/ |
53063) |
= |
-4.91515744 |
11 |
2218995 |
2584 |
- |
2628 |
= |
-44 |
* |
(5915 |
/ |
53063) |
= |
-4.90473584 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for San Diego Unified
|
-27 |
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 |
68074 |
2443 |
- |
2436 |
= |
7 |
* |
(8515 |
/ |
52454) |
= |
1.13632897 |
4 |
68076 |
2478 |
- |
2485 |
= |
-7 |
* |
(8451 |
/ |
52454) |
= |
-1.12778815 |
5 |
68077 |
2505 |
- |
2528 |
= |
-23 |
* |
(8396 |
/ |
52454) |
= |
-3.68147329 |
6 |
68080 |
2527 |
- |
2552 |
= |
-25 |
* |
(7127 |
/ |
52454) |
= |
-3.39678575 |
7 |
68081 |
2540 |
- |
2567 |
= |
-27 |
* |
(7172 |
/ |
52454) |
= |
-3.69169175 |
8 |
68084 |
2550 |
- |
2586 |
= |
-36 |
* |
(6853 |
/ |
52454) |
= |
-4.70332098 |
11 |
68085 |
2590 |
- |
2628 |
= |
-38 |
* |
(5940 |
/ |
52454) |
= |
-4.30319896 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for San Diego Unified
|
-20 |
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 |
69891 |
2450 |
- |
2436 |
= |
14 |
* |
(8338 |
/ |
52353) |
= |
2.22970985 |
4 |
69892 |
2484 |
- |
2485 |
= |
-1 |
* |
(8284 |
/ |
52353) |
= |
-0.15823353 |
5 |
69894 |
2513 |
- |
2528 |
= |
-15 |
* |
(8229 |
/ |
52353) |
= |
-2.35774454 |
6 |
69897 |
2528 |
- |
2552 |
= |
-24 |
* |
(7118 |
/ |
52353) |
= |
-3.26307946 |
7 |
69899 |
2538 |
- |
2567 |
= |
-29 |
* |
(7022 |
/ |
52353) |
= |
-3.88971023 |
8 |
69901 |
2547 |
- |
2586 |
= |
-39 |
* |
(7037 |
/ |
52353) |
= |
-5.24216375 |
11 |
69902 |
2588 |
- |
2628 |
= |
-40 |
* |
(6325 |
/ |
52353) |
= |
-4.8325788 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for San Diego Unified
|
-18 |
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 |
70048 |
2452 |
- |
2436 |
= |
16 |
* |
(7709 |
/ |
50853) |
= |
2.42550094 |
4 |
70049 |
2490 |
- |
2485 |
= |
5 |
* |
(8061 |
/ |
50853) |
= |
0.79257861 |
5 |
70052 |
2517 |
- |
2528 |
= |
-11 |
* |
(8048 |
/ |
50853) |
= |
-1.7408609 |
6 |
70053 |
2530 |
- |
2552 |
= |
-22 |
* |
(7004 |
/ |
50853) |
= |
-3.03006704 |
7 |
70056 |
2539 |
- |
2567 |
= |
-28 |
* |
(6952 |
/ |
50853) |
= |
-3.82781742 |
8 |
70057 |
2550 |
- |
2586 |
= |
-36 |
* |
(6785 |
/ |
50853) |
= |
-4.80325644 |
11 |
70060 |
2585 |
- |
2628 |
= |
-43 |
* |
(6294 |
/ |
50853) |
= |
-5.32204589 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for San Diego Unified
|
-16 |
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 |
70569 |
2457 |
- |
2436 |
= |
21 |
* |
(7815 |
/ |
49691) |
= |
3.30271074 |
4 |
70570 |
2494 |
- |
2485 |
= |
9 |
* |
(7551 |
/ |
49691) |
= |
1.36763196 |
5 |
70571 |
2524 |
- |
2528 |
= |
-4 |
* |
(7829 |
/ |
49691) |
= |
-0.63021472 |
6 |
70572 |
2533 |
- |
2552 |
= |
-19 |
* |
(6771 |
/ |
49691) |
= |
-2.58897988 |
7 |
70573 |
2547 |
- |
2567 |
= |
-20 |
* |
(6849 |
/ |
49691) |
= |
-2.756636 |
8 |
70574 |
2554 |
- |
2586 |
= |
-32 |
* |
(6696 |
/ |
49691) |
= |
-4.3120887 |
11 |
70575 |
2579 |
- |
2628 |
= |
-49 |
* |
(6180 |
/ |
49691) |
= |
-6.09406125 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for San Diego Unified
|
-12 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-27
|
-20
|
-18
|
-16
|
-12
|
-93.0 |
-18.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -3.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -33.6
For the lines, you have the data necessary to plot the chart.