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 |
928193 |
2472 |
- |
2436 |
= |
36 |
* |
(98 |
/ |
274)
|
= |
12.87591239 |
| 4 |
928196 |
2499 |
- |
2485 |
= |
14 |
* |
(85 |
/ |
274)
|
= |
4.34306569 |
| 5 |
928197 |
2537 |
- |
2528 |
= |
9 |
* |
(91 |
/ |
274)
|
= |
2.98905109 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Mar Vista Elementary
|
20 |
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 |
29348 |
2496 |
- |
2436 |
= |
60 |
* |
(92 |
/ |
262)
|
= |
21.06870228 |
| 4 |
29351 |
2517 |
- |
2485 |
= |
32 |
* |
(88 |
/ |
262)
|
= |
10.74809158 |
| 5 |
29353 |
2522 |
- |
2528 |
= |
-6 |
* |
(82 |
/ |
262)
|
= |
-1.87786259 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Mar Vista Elementary
|
30 |
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 |
29914 |
2487 |
- |
2436 |
= |
51 |
* |
(85 |
/ |
256)
|
= |
16.93359375 |
| 4 |
29916 |
2520 |
- |
2485 |
= |
35 |
* |
(85 |
/ |
256)
|
= |
11.62109375 |
| 5 |
29918 |
2532 |
- |
2528 |
= |
4 |
* |
(86 |
/ |
256)
|
= |
1.34375 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Mar Vista Elementary
|
30 |
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 |
29963 |
2489 |
- |
2436 |
= |
53 |
* |
(88 |
/ |
247)
|
= |
18.88259106 |
| 4 |
29965 |
2527 |
- |
2485 |
= |
42 |
* |
(80 |
/ |
247)
|
= |
13.60323884 |
| 5 |
29966 |
2555 |
- |
2528 |
= |
27 |
* |
(79 |
/ |
247)
|
= |
8.63562751 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Mar Vista Elementary
|
41 |
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 |
30136 |
2490 |
- |
2436 |
= |
54 |
* |
(96 |
/ |
262)
|
= |
19.7862595 |
| 4 |
30137 |
2533 |
- |
2485 |
= |
48 |
* |
(87 |
/ |
262)
|
= |
15.93893126 |
| 5 |
30138 |
2548 |
- |
2528 |
= |
20 |
* |
(79 |
/ |
262)
|
= |
6.03053434 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Mar Vista Elementary
|
42 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
20
|
30
|
30
|
41
|
42
|
163.0 |
32.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 59.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 5.6
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:
