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 |
2766419 |
2446 |
- |
2436 |
= |
10 |
* |
(43 |
/ |
235) |
= |
1.82978723 |
4 |
2766420 |
2459 |
- |
2485 |
= |
-26 |
* |
(50 |
/ |
235) |
= |
-5.53191488 |
5 |
2766423 |
2466 |
- |
2528 |
= |
-62 |
* |
(38 |
/ |
235) |
= |
-10.02553187 |
6 |
2766424 |
2488 |
- |
2552 |
= |
-64 |
* |
(34 |
/ |
235) |
= |
-9.25957446 |
7 |
2766427 |
2522 |
- |
2567 |
= |
-45 |
* |
(29 |
/ |
235) |
= |
-5.55319148 |
8 |
2766428 |
2553 |
- |
2586 |
= |
-33 |
* |
(41 |
/ |
235) |
= |
-5.75744681 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Bella Vista Elementary
|
-34 |
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 |
84180 |
2446 |
- |
2436 |
= |
10 |
* |
(43 |
/ |
225) |
= |
1.91111111 |
4 |
84183 |
2452 |
- |
2485 |
= |
-33 |
* |
(47 |
/ |
225) |
= |
-6.8933333 |
5 |
84184 |
2455 |
- |
2528 |
= |
-73 |
* |
(43 |
/ |
225) |
= |
-13.9511111 |
6 |
84187 |
2460 |
- |
2552 |
= |
-92 |
* |
(38 |
/ |
225) |
= |
-15.5377777 |
7 |
84188 |
2537 |
- |
2567 |
= |
-30 |
* |
(32 |
/ |
225) |
= |
-4.26666666 |
8 |
84191 |
2553 |
- |
2586 |
= |
-33 |
* |
(22 |
/ |
225) |
= |
-3.22666664 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Bella Vista Elementary
|
-42 |
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 |
86505 |
2466 |
- |
2436 |
= |
30 |
* |
(35 |
/ |
249) |
= |
4.21686744 |
4 |
86507 |
2454 |
- |
2485 |
= |
-31 |
* |
(44 |
/ |
249) |
= |
-5.47791164 |
5 |
86508 |
2489 |
- |
2528 |
= |
-39 |
* |
(54 |
/ |
249) |
= |
-8.45783129 |
6 |
86510 |
2473 |
- |
2552 |
= |
-79 |
* |
(40 |
/ |
249) |
= |
-12.69076303 |
7 |
86513 |
2507 |
- |
2567 |
= |
-60 |
* |
(37 |
/ |
249) |
= |
-8.91566262 |
8 |
86514 |
2549 |
- |
2586 |
= |
-37 |
* |
(39 |
/ |
249) |
= |
-5.79518072 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Bella Vista Elementary
|
-37 |
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 |
86729 |
2480 |
- |
2436 |
= |
44 |
* |
(32 |
/ |
247) |
= |
5.70040482 |
4 |
86730 |
2464 |
- |
2485 |
= |
-21 |
* |
(35 |
/ |
247) |
= |
-2.97570848 |
5 |
86733 |
2499 |
- |
2528 |
= |
-29 |
* |
(44 |
/ |
247) |
= |
-5.16599188 |
6 |
86734 |
2493 |
- |
2552 |
= |
-59 |
* |
(55 |
/ |
247) |
= |
-13.13765178 |
7 |
86737 |
2504 |
- |
2567 |
= |
-63 |
* |
(39 |
/ |
247) |
= |
-9.94736837 |
8 |
86738 |
2540 |
- |
2586 |
= |
-46 |
* |
(42 |
/ |
247) |
= |
-7.82186231 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Bella Vista Elementary
|
-33 |
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 |
87333 |
2459 |
- |
2436 |
= |
23 |
* |
(33 |
/ |
235) |
= |
3.22978721 |
4 |
87334 |
2476 |
- |
2485 |
= |
-9 |
* |
(30 |
/ |
235) |
= |
-1.14893617 |
5 |
87335 |
2511 |
- |
2528 |
= |
-17 |
* |
(37 |
/ |
235) |
= |
-2.67659574 |
6 |
87336 |
2484 |
- |
2552 |
= |
-68 |
* |
(50 |
/ |
235) |
= |
-14.46808508 |
7 |
87337 |
2553 |
- |
2567 |
= |
-14 |
* |
(48 |
/ |
235) |
= |
-2.85957447 |
8 |
87338 |
2542 |
- |
2586 |
= |
-44 |
* |
(37 |
/ |
235) |
= |
-6.92765955 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Bella Vista Elementary
|
-25 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-34
|
-42
|
-37
|
-33
|
-25
|
-171.0 |
-34.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -16.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -52.2
For the lines, you have the data necessary to plot the chart.