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 |
210726 |
2462 |
- |
2436 |
= |
26 |
* |
(126 |
/ |
426)
|
= |
7.69014082 |
| 4 |
210727 |
2499 |
- |
2485 |
= |
14 |
* |
(143 |
/ |
426)
|
= |
4.69953051 |
| 5 |
210730 |
2545 |
- |
2528 |
= |
17 |
* |
(157 |
/ |
426)
|
= |
6.2652582 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Mt. Diablo Elementary
|
19 |
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 |
6246 |
2476 |
- |
2436 |
= |
40 |
* |
(138 |
/ |
420)
|
= |
13.14285712 |
| 4 |
6248 |
2516 |
- |
2485 |
= |
31 |
* |
(135 |
/ |
420)
|
= |
9.9642857 |
| 5 |
6249 |
2521 |
- |
2528 |
= |
-7 |
* |
(147 |
/ |
420)
|
= |
-2.45 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Mt. Diablo Elementary
|
21 |
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 |
6421 |
2472 |
- |
2436 |
= |
36 |
* |
(132 |
/ |
410)
|
= |
11.59024388 |
| 4 |
6423 |
2519 |
- |
2485 |
= |
34 |
* |
(145 |
/ |
410)
|
= |
12.02439022 |
| 5 |
6426 |
2512 |
- |
2528 |
= |
-16 |
* |
(133 |
/ |
410)
|
= |
-5.19024389 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Mt. Diablo Elementary
|
18 |
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 |
6418 |
2478 |
- |
2436 |
= |
42 |
* |
(136 |
/ |
411)
|
= |
13.89781021 |
| 4 |
6419 |
2523 |
- |
2485 |
= |
38 |
* |
(130 |
/ |
411)
|
= |
12.01946471 |
| 5 |
6422 |
2514 |
- |
2528 |
= |
-14 |
* |
(145 |
/ |
411)
|
= |
-4.93917274 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Mt. Diablo Elementary
|
21 |
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 |
6477 |
2481 |
- |
2436 |
= |
45 |
* |
(140 |
/ |
410)
|
= |
15.36585363 |
| 4 |
6478 |
2527 |
- |
2485 |
= |
42 |
* |
(131 |
/ |
410)
|
= |
13.41951219 |
| 5 |
6479 |
2512 |
- |
2528 |
= |
-16 |
* |
(139 |
/ |
410)
|
= |
-5.42439024 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Mt. Diablo Elementary
|
23 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
19
|
21
|
18
|
21
|
23
|
102.0 |
20.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 23.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 17.4
For the lines, you have the data necessary to plot the chart.
Very last step
The percent of students getting a Free or Reduced Price Meal comes from the following sources:
