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 |
2222070 |
2469 |
- |
2628 |
= |
-159 |
* |
(208 |
/ |
208)
|
= |
-159.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Crawford High
|
-159 |
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 |
11 |
68152 |
2503 |
- |
2628 |
= |
-125 |
* |
(234 |
/ |
234)
|
= |
-125.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Crawford High
|
-125 |
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 |
69969 |
2513 |
- |
2628 |
= |
-115 |
* |
(237 |
/ |
237)
|
= |
-115.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Crawford High
|
-115 |
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 |
70128 |
2496 |
- |
2628 |
= |
-132 |
* |
(205 |
/ |
205)
|
= |
-132.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Crawford High
|
-132 |
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 |
70641 |
2518 |
- |
2628 |
= |
-110 |
* |
(231 |
/ |
231)
|
= |
-110.0 |
Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Crawford High
|
-110 |
Last steps
Compute the average
2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
-159
|
-125
|
-115
|
-132
|
-110
|
-641.0 |
-128.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -71.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -185.2
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: