Guideline for Exam Points for Questions File: Math... Problem Point Allocation

advertisement
Guideline for Exam Points for Questions File: Math Stuff/Exam Grade Points September 2013
Problem
type
Isolated
Connected
Multiple
Choice, nowork or
mental
math
problems
Hypothesis
test results
and
conclusions
Work
Required
Problems
3 + answers
Additional
Deductions/
Calculator
only
Point Allocation
Examples
2 Pts for Multiple Choice, no-work, calculator only with no evidence possible or mental math problems
such as Circle 1: yes no, Mean and SD, Decision rule lines and α,β, power labels, Family __________,
evaluate functions, square roots, or exponents.
3 CPts
1 for correct if input was provided
2 for consistent with reasonable input
Follow up questions to hypothesis test conclusion (3 Cpts):
0 points if p-value evidence from prior problem does not exist
1 point for accurate
Significant?
1 for consistent with significance
Which Hypothesis?
1 point for consistent with p-value, 0 points if p-value>1
Conclusion?
Elementary Hypothesis Test conclusions (6 pts):
There is is not a
2 points each part
significant
Regular Hypothesis Test Conclusions (12 or 14 WCpts):
difference (t= ________
6 wpts for test statistic
p = _____, n=________)
3 cpts for p-value
1 point for correct, 2 points for consistent with test statistic
3 cpts for significance if p-value is provided –
1 point for correct, 2 points for consistent with a p-value<1
2 points for sample size
6-8 wpts
Confidence Intervals – 2
2 Points for each single answer (1 pt if ≥0.5 correct)
answers, either
Work Points
boundaries or Stat ± ME
4 points for A level work. Organized, all steps, Error-free or lists calculator
inputs. Includes Formula-substitution-solution(s)
Simplify expressions
3 points for B level work. Organized with errors or semi-organized,
missing steps, but error-free.
Dimensional Analysis
2 points for C level work. Evidence of correct strategy with correct
answer or incomplete set of answers (abs equations)
1 point for D level work. Evidence of correct strategy with incorrect
answer or lists calculator inputs with substitution errors.
0 point for F level work. No work, incomprehensible work or wrong
strategy (no matter how well it is organized).
4 pts if all correct
Label Normal Curve
2 pts if ≥0.5 correct
Binompdf
1 pt if answer is provided and something is correct
Interval Notation
Incomplete simplification -1 per missed step
Form / Notation errors
Rounding w/consequences
Extra answers
Two non-equivalent answers of which one is correct
 instead of s
x and s nearly correct but with apparent input error
-1
Guidelines for Exam Points for Graphs
Line Graph for
inequalities
Location of each point
and arrow
(3)
Cartesian Graphs
(8)
(A) 3 points – 1 each for point
location, symbol and direction
of arrow
If these aren’t correct but are
precise (consistent with input),
give 2 points.
Location of line (border to
border)
8 points –
2 for accuracy (correct)
2 for Shape of Line
2 for precision (consistent
with input)
2 for Table of values
-1 if not border to border
Histogram
Title
X axis Title
Y axis Title
X axis scale
Y axis scale
Frequency Distribution Enough Reader Friendly
Classes or followed
directions about the
starting value and class
width, [L,H) notation
Counts
Accurate Bar height
Precise Bar height
Bars Not Touching
(13)
1
1
1
1
1
2
Box Plot
Title
X axis Title (if needed)
Y axis Title
Y axis scale
Pie Chart
Title
All Slice Labels provided
All Slice Values provided
All Slice Percents
provided
Size of slices –
approximately correct
Values and Percents
(11)
1
2
2
2
Scatter Plot
Title
X axis Title
Y axis Title
X axis scale
(9)
1
1
1
1
1 Accurate
1 Precise
2 Accurate
Y axis scale
1
Plot
Line
2
2
2 if all correct
1 if correct ≥ 0.5
0 if correct < 0.5
If the graph is accurate, and no
table of values is shown, give
credit for precision and ToV.
(10)
1
1
1
1
Input Values
Accurate placement
Precise placement
2 if all correct
1 if correct ≥ 0.5
0 if correct < 0.5
-1
Download