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 |
85031 |
2473 |
- |
2436 |
= |
37 |
* |
(50 |
/ |
50)
|
= |
37.0 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Central Park Elementary
|
37 |
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 |
85245 |
2491 |
- |
2436 |
= |
55 |
* |
(63 |
/ |
114)
|
= |
30.39473679 |
| 4 |
85247 |
2510 |
- |
2485 |
= |
25 |
* |
(51 |
/ |
114)
|
= |
11.18421053 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Central Park Elementary
|
42 |
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 |
85840 |
2497 |
- |
2436 |
= |
61 |
* |
(69 |
/ |
169)
|
= |
24.9053254 |
| 4 |
85841 |
2525 |
- |
2485 |
= |
40 |
* |
(52 |
/ |
169)
|
= |
12.30769228 |
| 5 |
85842 |
2544 |
- |
2528 |
= |
16 |
* |
(48 |
/ |
169)
|
= |
4.54437869 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Central Park Elementary
|
42 |
Last steps
Compute the average
| 2017 |
2018 |
2019 |
Sum |
Average |
|
37
|
42
|
42
|
121.0 |
40.3 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 46.333333333333333333
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 34.333333333333333333
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:
