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 |
3200805 |
2416 |
- |
2436 |
= |
-20 |
* |
(161 |
/ |
796) |
= |
-4.04522612 |
4 |
3200806 |
2452 |
- |
2485 |
= |
-33 |
* |
(126 |
/ |
796) |
= |
-5.22361808 |
5 |
3200809 |
2503 |
- |
2528 |
= |
-25 |
* |
(123 |
/ |
796) |
= |
-3.86306533 |
6 |
3200810 |
2499 |
- |
2552 |
= |
-53 |
* |
(131 |
/ |
796) |
= |
-8.72236179 |
7 |
3200813 |
2523 |
- |
2567 |
= |
-44 |
* |
(135 |
/ |
796) |
= |
-7.46231152 |
8 |
3200814 |
2563 |
- |
2586 |
= |
-23 |
* |
(120 |
/ |
796) |
= |
-3.46733666 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Wheatland
|
-33 |
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 |
98657 |
2421 |
- |
2436 |
= |
-15 |
* |
(151 |
/ |
804) |
= |
-2.81716418 |
4 |
98659 |
2470 |
- |
2485 |
= |
-15 |
* |
(144 |
/ |
804) |
= |
-2.68656716 |
5 |
98661 |
2484 |
- |
2528 |
= |
-44 |
* |
(133 |
/ |
804) |
= |
-7.27860694 |
6 |
98662 |
2528 |
- |
2552 |
= |
-24 |
* |
(123 |
/ |
804) |
= |
-3.67164178 |
7 |
98665 |
2535 |
- |
2567 |
= |
-32 |
* |
(120 |
/ |
804) |
= |
-4.77611939 |
8 |
98666 |
2578 |
- |
2586 |
= |
-8 |
* |
(133 |
/ |
804) |
= |
-1.32338308 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Wheatland
|
-23 |
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 |
101520 |
2427 |
- |
2436 |
= |
-9 |
* |
(153 |
/ |
812) |
= |
-1.69581281 |
4 |
101521 |
2462 |
- |
2485 |
= |
-23 |
* |
(140 |
/ |
812) |
= |
-3.96551724 |
5 |
101524 |
2477 |
- |
2528 |
= |
-51 |
* |
(144 |
/ |
812) |
= |
-9.04433495 |
6 |
101526 |
2493 |
- |
2552 |
= |
-59 |
* |
(131 |
/ |
812) |
= |
-9.51847289 |
7 |
101528 |
2552 |
- |
2567 |
= |
-15 |
* |
(128 |
/ |
812) |
= |
-2.36453201 |
8 |
101529 |
2568 |
- |
2586 |
= |
-18 |
* |
(116 |
/ |
812) |
= |
-2.57142856 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Wheatland
|
-29 |
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 |
101674 |
2420 |
- |
2436 |
= |
-16 |
* |
(125 |
/ |
816) |
= |
-2.45098038 |
4 |
101677 |
2474 |
- |
2485 |
= |
-11 |
* |
(156 |
/ |
816) |
= |
-2.10294117 |
5 |
101678 |
2485 |
- |
2528 |
= |
-43 |
* |
(142 |
/ |
816) |
= |
-7.4828431 |
6 |
101681 |
2509 |
- |
2552 |
= |
-43 |
* |
(134 |
/ |
816) |
= |
-7.0612745 |
7 |
101682 |
2520 |
- |
2567 |
= |
-47 |
* |
(139 |
/ |
816) |
= |
-8.00612744 |
8 |
101685 |
2591 |
- |
2586 |
= |
5 |
* |
(120 |
/ |
816) |
= |
0.73529412 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Wheatland
|
-26 |
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 |
102328 |
2421 |
- |
2436 |
= |
-15 |
* |
(137 |
/ |
845) |
= |
-2.43195266 |
4 |
102329 |
2463 |
- |
2485 |
= |
-22 |
* |
(125 |
/ |
845) |
= |
-3.25443787 |
5 |
102330 |
2491 |
- |
2528 |
= |
-37 |
* |
(159 |
/ |
845) |
= |
-6.96213016 |
6 |
102331 |
2528 |
- |
2552 |
= |
-24 |
* |
(141 |
/ |
845) |
= |
-4.00473372 |
7 |
102332 |
2527 |
- |
2567 |
= |
-40 |
* |
(144 |
/ |
845) |
= |
-6.81656804 |
8 |
102333 |
2566 |
- |
2586 |
= |
-20 |
* |
(139 |
/ |
845) |
= |
-3.28994082 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Wheatland
|
-27 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-33
|
-23
|
-29
|
-26
|
-27
|
-138.0 |
-27.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -18.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -36.6
For the lines, you have the data necessary to plot the chart.