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 |
2756407 |
2439 |
- |
2436 |
= |
3 |
* |
(377 |
/ |
1116) |
= |
1.01344086 |
4 |
2756408 |
2472 |
- |
2485 |
= |
-13 |
* |
(344 |
/ |
1116) |
= |
-4.00716845 |
5 |
2756411 |
2508 |
- |
2528 |
= |
-20 |
* |
(395 |
/ |
1116) |
= |
-7.07885304 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Santa Cruz City Elementary
|
-10 |
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 |
83852 |
2430 |
- |
2436 |
= |
-6 |
* |
(344 |
/ |
1058) |
= |
-1.95085066 |
4 |
83854 |
2472 |
- |
2485 |
= |
-13 |
* |
(367 |
/ |
1058) |
= |
-4.50945179 |
5 |
83856 |
2516 |
- |
2528 |
= |
-12 |
* |
(344 |
/ |
1058) |
= |
-3.90170131 |
6 |
83859 |
0 |
- |
2552 |
= |
|
* |
(0 |
/ |
1058) |
= |
|
7 |
83860 |
0 |
- |
2567 |
= |
|
* |
(3 |
/ |
1058) |
= |
|
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Santa Cruz City Elementary
|
-10 |
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 |
86169 |
2431 |
- |
2436 |
= |
-5 |
* |
(310 |
/ |
1011) |
= |
-1.53313551 |
4 |
86170 |
2459 |
- |
2485 |
= |
-26 |
* |
(330 |
/ |
1011) |
= |
-8.48664687 |
5 |
86173 |
2508 |
- |
2528 |
= |
-20 |
* |
(371 |
/ |
1011) |
= |
-7.33926804 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Santa Cruz City Elementary
|
-17 |
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 |
86400 |
2424 |
- |
2436 |
= |
-12 |
* |
(347 |
/ |
984) |
= |
-4.23170731 |
4 |
86403 |
2453 |
- |
2485 |
= |
-32 |
* |
(304 |
/ |
984) |
= |
-9.88617885 |
5 |
86404 |
2501 |
- |
2528 |
= |
-27 |
* |
(333 |
/ |
984) |
= |
-9.13719512 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Santa Cruz City Elementary
|
-23 |
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 |
87000 |
2436 |
- |
2436 |
= |
0 |
* |
(293 |
/ |
938) |
= |
0.0 |
4 |
87001 |
2463 |
- |
2485 |
= |
-22 |
* |
(340 |
/ |
938) |
= |
-7.97441363 |
5 |
87002 |
2507 |
- |
2528 |
= |
-21 |
* |
(305 |
/ |
938) |
= |
-6.82835819 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Santa Cruz City Elementary
|
-15 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-10
|
-10
|
-17
|
-23
|
-15
|
-75.0 |
-15.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 0.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -30.0
For the lines, you have the data necessary to plot the chart.