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 |
158359 |
2422 |
- |
2436 |
= |
-14 |
* |
(145 |
/ |
1067) |
= |
-1.90253045 |
4 |
158360 |
2448 |
- |
2485 |
= |
-37 |
* |
(154 |
/ |
1067) |
= |
-5.34020615 |
5 |
158363 |
2477 |
- |
2528 |
= |
-51 |
* |
(161 |
/ |
1067) |
= |
-7.69540765 |
6 |
158364 |
2483 |
- |
2552 |
= |
-69 |
* |
(163 |
/ |
1067) |
= |
-10.54076851 |
7 |
158367 |
2514 |
- |
2567 |
= |
-53 |
* |
(140 |
/ |
1067) |
= |
-6.95407684 |
8 |
158368 |
2519 |
- |
2586 |
= |
-67 |
* |
(140 |
/ |
1067) |
= |
-8.7910028 |
11 |
158371 |
2565 |
- |
2628 |
= |
-63 |
* |
(164 |
/ |
1067) |
= |
-9.68322398 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Gridley Unified
|
-51 |
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 |
4679 |
2424 |
- |
2436 |
= |
-12 |
* |
(148 |
/ |
1053) |
= |
-1.68660968 |
4 |
4681 |
2478 |
- |
2485 |
= |
-7 |
* |
(142 |
/ |
1053) |
= |
-0.94396961 |
5 |
4684 |
2496 |
- |
2528 |
= |
-32 |
* |
(153 |
/ |
1053) |
= |
-4.64957264 |
6 |
4686 |
2480 |
- |
2552 |
= |
-72 |
* |
(156 |
/ |
1053) |
= |
-10.66666666 |
7 |
4687 |
2513 |
- |
2567 |
= |
-54 |
* |
(168 |
/ |
1053) |
= |
-8.61538459 |
8 |
4690 |
2527 |
- |
2586 |
= |
-59 |
* |
(142 |
/ |
1053) |
= |
-7.95631526 |
11 |
4691 |
2584 |
- |
2628 |
= |
-44 |
* |
(144 |
/ |
1053) |
= |
-6.01709398 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Gridley Unified
|
-41 |
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 |
4777 |
2428 |
- |
2436 |
= |
-8 |
* |
(138 |
/ |
1026) |
= |
-1.07602338 |
4 |
4780 |
2454 |
- |
2485 |
= |
-31 |
* |
(148 |
/ |
1026) |
= |
-4.47173487 |
5 |
4781 |
2493 |
- |
2528 |
= |
-35 |
* |
(139 |
/ |
1026) |
= |
-4.74171537 |
6 |
4784 |
2494 |
- |
2552 |
= |
-58 |
* |
(152 |
/ |
1026) |
= |
-8.59259258 |
7 |
4785 |
2494 |
- |
2567 |
= |
-73 |
* |
(156 |
/ |
1026) |
= |
-11.09941516 |
8 |
4788 |
2508 |
- |
2586 |
= |
-78 |
* |
(165 |
/ |
1026) |
= |
-12.54385961 |
11 |
4789 |
2583 |
- |
2628 |
= |
-45 |
* |
(128 |
/ |
1026) |
= |
-5.61403508 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Gridley Unified
|
-48 |
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 |
4765 |
2447 |
- |
2436 |
= |
11 |
* |
(136 |
/ |
1039) |
= |
1.439846 |
4 |
4768 |
2468 |
- |
2485 |
= |
-17 |
* |
(145 |
/ |
1039) |
= |
-2.37247352 |
5 |
4769 |
2489 |
- |
2528 |
= |
-39 |
* |
(146 |
/ |
1039) |
= |
-5.48026947 |
6 |
4772 |
2506 |
- |
2552 |
= |
-46 |
* |
(141 |
/ |
1039) |
= |
-6.24254086 |
7 |
4773 |
2521 |
- |
2567 |
= |
-46 |
* |
(149 |
/ |
1039) |
= |
-6.59672761 |
8 |
4776 |
2507 |
- |
2586 |
= |
-79 |
* |
(151 |
/ |
1039) |
= |
-11.48123195 |
11 |
4777 |
2581 |
- |
2628 |
= |
-47 |
* |
(171 |
/ |
1039) |
= |
-7.73532242 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Gridley Unified
|
-38 |
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 |
4799 |
2429 |
- |
2436 |
= |
-7 |
* |
(162 |
/ |
1062) |
= |
-1.0677966 |
4 |
4800 |
2470 |
- |
2485 |
= |
-15 |
* |
(144 |
/ |
1062) |
= |
-2.0338983 |
5 |
4801 |
2473 |
- |
2528 |
= |
-55 |
* |
(143 |
/ |
1062) |
= |
-7.405838 |
6 |
4802 |
2490 |
- |
2552 |
= |
-62 |
* |
(153 |
/ |
1062) |
= |
-8.93220335 |
7 |
4803 |
2528 |
- |
2567 |
= |
-39 |
* |
(151 |
/ |
1062) |
= |
-5.54519772 |
8 |
4804 |
2541 |
- |
2586 |
= |
-45 |
* |
(152 |
/ |
1062) |
= |
-6.44067797 |
11 |
4805 |
2553 |
- |
2628 |
= |
-75 |
* |
(157 |
/ |
1062) |
= |
-11.08757055 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Gridley Unified
|
-43 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-51
|
-41
|
-48
|
-38
|
-43
|
-221.0 |
-44.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -29.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -59.2
For the lines, you have the data necessary to plot the chart.