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 |
32257 |
2513 |
- |
2436 |
= |
77 |
* |
(237 |
/ |
237)
|
= |
77.0 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for James Leitch Elementary
|
77 |
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 |
856 |
2535 |
- |
2436 |
= |
99 |
* |
(201 |
/ |
201)
|
= |
99.0 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for James Leitch Elementary
|
99 |
Last steps
Compute the average
| 2015 |
2016 |
Sum |
Average |
|
77
|
99
|
176.0 |
88.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 133.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 43.0
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:
