DUMPgrades {ProfessR}R Documentation

Dump grades to a file

Description

Dump grades to a file

Usage

DUMPgrades(D1, file = NULL, id = NULL, names = NULL)

Arguments

D1 list output from do.grades
file file name, a csv will be added as a suffix
id vector of student IDs
names character vector of student names

Value

Side effects

Author(s)

Jonathan M. Lees<jonathan.lees@unc.edu>

See Also

do.grades

Alias

DUMPgrades

Keyword

misc

Examples


g = rnorm(n=130, m=82, sd=10)
g[g>100] = 100
g[g<1] = 1

B = boxplot(g)

divs = c(min(g), B$stats[1:4] + diff(B$stats)/2, max(g) )


###  to run interactively, remove the divs
###  D1 = do.grades(g, tit="GEOL 105 Exam 1")

### otherwise use previously calculated divs:
D1 = do.grades(g, divs=divs, tit="GEOL 105 Exam 1")
DUMPgrades(D1, file="TEST1grades" )

Results


R version 2.9.0 (2009-04-17)
Copyright (C) 2009 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(ProfessR)
> png(filename="images/DUMPgrades_%03d.png" ,width=480, height=480)
> ### Name: DUMPgrades
> ### Title: Dump grades to a file
> ### Aliases: DUMPgrades
> ### Keywords: misc
> 
> ### ** Examples
> 
> 
> g = rnorm(n=130, m=82, sd=10)
> g[g>100] = 100
> g[g<1] = 1
> 
> B = boxplot(g)
> 
> divs = c(min(g), B$stats[1:4] + diff(B$stats)/2, max(g) )
> 
> 
> ###  to run interactively, remove the divs
> ###  D1 = do.grades(g, tit="GEOL 105 Exam 1")
> 
> ### otherwise use previously calculated divs:
> D1 = do.grades(g, divs=divs, tit="GEOL 105 Exam 1")
Grade divisions:
63.14409
70.3788
80.8036
87.673
95.67614
100
Letter Grade Distribution:
1 A+ 7
2 A 2
3 A- 4
4 B+ 9
5 B 14
6 B- 10
7 C+ 11
8 C 13
9 C- 17
10 D+ 12
11 D 11
12 D- 8
13 F 12
[1] "Mean Score= 74.8978200701129"
> DUMPgrades(D1, file="TEST1grades" )
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>


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