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 |
41525 |
2387 |
- |
2436 |
= |
-49 |
* |
(1866 |
/ |
11026) |
= |
-8.29258115 |
4 |
41526 |
2422 |
- |
2485 |
= |
-63 |
* |
(1771 |
/ |
11026) |
= |
-10.11908211 |
5 |
41529 |
2446 |
- |
2528 |
= |
-82 |
* |
(1668 |
/ |
11026) |
= |
-12.40486119 |
6 |
41530 |
2473 |
- |
2552 |
= |
-79 |
* |
(1636 |
/ |
11026) |
= |
-11.72174856 |
7 |
41533 |
2494 |
- |
2567 |
= |
-73 |
* |
(1577 |
/ |
11026) |
= |
-10.44086698 |
8 |
41534 |
2505 |
- |
2586 |
= |
-81 |
* |
(1466 |
/ |
11026) |
= |
-10.76963534 |
11 |
41537 |
2529 |
- |
2628 |
= |
-99 |
* |
(1042 |
/ |
11026) |
= |
-9.355886 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Hayward Unified
|
-73 |
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 |
1114 |
2393 |
- |
2436 |
= |
-43 |
* |
(1698 |
/ |
11282) |
= |
-6.47172485 |
4 |
1116 |
2424 |
- |
2485 |
= |
-61 |
* |
(1852 |
/ |
11282) |
= |
-10.01347275 |
5 |
1117 |
2448 |
- |
2528 |
= |
-80 |
* |
(1741 |
/ |
11282) |
= |
-12.3453288 |
6 |
1119 |
2478 |
- |
2552 |
= |
-74 |
* |
(1644 |
/ |
11282) |
= |
-10.78319446 |
7 |
1122 |
2486 |
- |
2567 |
= |
-81 |
* |
(1562 |
/ |
11282) |
= |
-11.21450095 |
8 |
1123 |
2516 |
- |
2586 |
= |
-70 |
* |
(1548 |
/ |
11282) |
= |
-9.60467998 |
11 |
1125 |
2525 |
- |
2628 |
= |
-103 |
* |
(1237 |
/ |
11282) |
= |
-11.29329904 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Hayward Unified
|
-72 |
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 |
1139 |
2399 |
- |
2436 |
= |
-37 |
* |
(1720 |
/ |
11055) |
= |
-5.75667116 |
4 |
1142 |
2428 |
- |
2485 |
= |
-57 |
* |
(1658 |
/ |
11055) |
= |
-8.54871095 |
5 |
1143 |
2448 |
- |
2528 |
= |
-80 |
* |
(1748 |
/ |
11055) |
= |
-12.64947984 |
6 |
1145 |
2478 |
- |
2552 |
= |
-74 |
* |
(1699 |
/ |
11055) |
= |
-11.37277244 |
7 |
1148 |
2493 |
- |
2567 |
= |
-74 |
* |
(1446 |
/ |
11055) |
= |
-9.67924011 |
8 |
1149 |
2508 |
- |
2586 |
= |
-78 |
* |
(1533 |
/ |
11055) |
= |
-10.81628215 |
11 |
1151 |
2515 |
- |
2628 |
= |
-113 |
* |
(1251 |
/ |
11055) |
= |
-12.78724555 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Hayward Unified
|
-72 |
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 |
1163 |
2395 |
- |
2436 |
= |
-41 |
* |
(1637 |
/ |
10661) |
= |
-6.29556324 |
4 |
1166 |
2435 |
- |
2485 |
= |
-50 |
* |
(1660 |
/ |
10661) |
= |
-7.78538595 |
5 |
1167 |
2453 |
- |
2528 |
= |
-75 |
* |
(1607 |
/ |
10661) |
= |
-11.3052246 |
6 |
1170 |
2486 |
- |
2552 |
= |
-66 |
* |
(1717 |
/ |
10661) |
= |
-10.62958446 |
7 |
1171 |
2493 |
- |
2567 |
= |
-74 |
* |
(1496 |
/ |
10661) |
= |
-10.38401648 |
8 |
1174 |
2515 |
- |
2586 |
= |
-71 |
* |
(1406 |
/ |
10661) |
= |
-9.3636619 |
11 |
1175 |
2525 |
- |
2628 |
= |
-103 |
* |
(1138 |
/ |
10661) |
= |
-10.99465332 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Hayward Unified
|
-67 |
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 |
1195 |
2401 |
- |
2436 |
= |
-35 |
* |
(1584 |
/ |
10542) |
= |
-5.25896413 |
4 |
1196 |
2437 |
- |
2485 |
= |
-48 |
* |
(1629 |
/ |
10542) |
= |
-7.41718838 |
5 |
1197 |
2455 |
- |
2528 |
= |
-73 |
* |
(1629 |
/ |
10542) |
= |
-11.28030733 |
6 |
1198 |
2482 |
- |
2552 |
= |
-70 |
* |
(1475 |
/ |
10542) |
= |
-9.79415668 |
7 |
1199 |
2494 |
- |
2567 |
= |
-73 |
* |
(1515 |
/ |
10542) |
= |
-10.49089351 |
8 |
1200 |
2505 |
- |
2586 |
= |
-81 |
* |
(1471 |
/ |
10542) |
= |
-11.30250421 |
11 |
1201 |
2508 |
- |
2628 |
= |
-120 |
* |
(1239 |
/ |
10542) |
= |
-14.1035856 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Hayward Unified
|
-70 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-73
|
-72
|
-72
|
-67
|
-70
|
-354.0 |
-70.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -64.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -76.8
For the lines, you have the data necessary to plot the chart.