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 |
11 |
851932 |
2431 |
- |
2628 |
= |
-197 |
* |
(26 |
/ |
26)
|
= |
-197.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Central High
|
-197 |
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 |
8 |
26941 |
0 |
- |
2586 |
= |
|
* |
(0 |
/ |
59)
|
= |
|
11 |
26942 |
2447 |
- |
2628 |
= |
-181 |
* |
(59 |
/ |
59)
|
= |
-181.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Central High
|
-181 |
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 |
11 |
27521 |
2418 |
- |
2628 |
= |
-210 |
* |
(56 |
/ |
56)
|
= |
-210.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Central High
|
-210 |
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 |
11 |
27565 |
2410 |
- |
2628 |
= |
-218 |
* |
(38 |
/ |
38)
|
= |
-218.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Central High
|
-218 |
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 |
11 |
27750 |
2423 |
- |
2628 |
= |
-205 |
* |
(95 |
/ |
95)
|
= |
-205.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Central High
|
-205 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-197
|
-181
|
-210
|
-218
|
-205
|
-1011.0 |
-202.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -160.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -244.2
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: