RUBRIC – Performance Assessment Statistics Unit

Statistics & Probability 6.SP 1,2,3,4,5a-d

Math Practice CC - Modeling and Justifying Arguments; CC+ - Precision, Modeling, Justifying

Problem / 0 / 1 / 2 / 3 / 4
1 – Statistical Question / a. b. or d. / n/a / n/a / n/a / c.
2 – 5 Wait time question
2) Mean / Blank; incorrect process / minutes / Error in calculation with correct process / 20 / 20 minutes
3) Median / Blank; incorrect process / minutes / Error in calculation with correct process / 25 / 25 minutes
4) Mode / Blank; incorrect process / minutes / n/a / 30 / 30 minutes
5) Example. The Mode. The mode is 30 min, the median is 25 min, and the mean is 20 min. Comparison the mode is the largest number by 5 min.
5) Best measure of center justification
(FT) / Blank / 1 of the following:
Claim
Units
Evidence
Summary / 2 of the following:
Claim
Units
Evidence
Summary / 3 of the following:
Claim
Units
Evidence
Summary / All of the following:
Claim
Units
Evidence
Summary
6 – 8) Travel distance box plot
6) Box plot data points / No points / 1-2 points correct / 3 points correct / 4 points correct / All 5 points correct: 10, 12, 20, 25 & 60
7) Plot drawing/ Precision
(FT) / Blank / Dot Plot / Points plotted with incorrect form or no ruler / n/a / Box plot accurate with ruler
8)Example. Saturday. 50% of travelers on Saturday travel from 26 to 70 miles away which is 25% more people than Wednesday’s who has only 25% of travelers traveling from 25-60 miles.
8 ) Travel distance - Justification / Blank / Saturday identified / Saturday identified because 70 and no comparison / Saturday identified & max’s compared; Saturday partial evid. (no wed) / Saturday compared to Wednesday with more than one comparison OR Saturday compared to Wednesday with comparison of quartile(s)
Problem / 0 / 1 / 2 / 3 / 4
9-20
9)Histogram
Bin Width 2
Bin Width 4 / Blank / incomplete / 1 of the following:
Ruler, Correct Bin Width,
Equal Interval, Label, Correct Numbers / 2 of the following:
Ruler, Correct Bin Width,
Equal Interval, Label, Correct Numbers / 3 of the following:
Ruler, Correct Bin Width, Equal Interval, Label, Correct Numbers / 4 of the following:
Ruler, Correct Bin Width,
Equal Interval, Label, Correct Numbers
10) Table / Blank / incomplete / Incorrect/errors in table / Left out zero data / n/a / Row 1: 10,11,12,13,14
Row 2: 1,3,1,2,0,1,0
11) >10 rides
(FT) / Blank / incomplete / n/a / n/a / Answer matches table / 4 students
12) # surveyed / Blank / incomplete / n/a / n/a / n/a / 8 students
13) Total rides / Blank / incomplete / n/a / Showed correct process / n/a / 80 rides
14) Mean rides / Blank / incomplete / rides / Error in calculation with correct process / 10 / 10 rides
15) Median rides / Blank / incomplete / rides / Error in calculation with correct process / 9.5
(Accurate work shown for 9.5 rounded to 10) / 9.5 rides
(Accurate work shown for 9.5 rounded to 10)
16) Mode of rides / Blank / incomplete / rides / n/a / 9 / 9 rides
17) Range of rides / Blank / incomplete / rides / 5 or 5 rides with no work / 5 OR
8 to 13 / 5 rides
Or 8 to 13 rides
18) CC– Sally
(FT) / Blank / incomplete / rides / 12 or 12 rides with no work / 12 / 12 rides
19) CC– Sally
(FT) / Blank / incomplete / rides / 10 or 10 rides with no work / 10 / 10 rides
20) CC– Sally
(FT) / Blank / incomplete / rides / 9 / 9 rides
18) CC+ - Sally MAD
(FT) / Blank / incomplete / rides / Error in calculation, correct process / 1.25
(Accurate work shown for 1.25 rounded to 1) / 1.25 rides
(Accurate work shown for 1.25 rounded to 1)
19) CC+ The Mean. Mean changes from 10 to 12 rides, the median changes from 9.5 to 10 rides and the mode stays at 9 rides. The mean changes the 1.5 rides more than the median and 2 rides more than the mode.
19) CC+ – Sally Justification
(FT) / Blank / incomplete / 1 of the following:
Claim
Units
Evidence
Summary / 2 of the following:
Claim
Units
Evidence
Summary / 3 of the following:
Claim
Units
Evidence
Summary / All of the following:
Claim
Units
Evidence
Summary