ECO220Y1 Final: ECO220Y1Y UTSG Term Test 4 220 Final ExamB15 RUBRIC
Marking Rubric: Test #4: “One Question”, ECO220Y, February 27, 2015
Each question has a marking rubric. For each part, every paper starts with zero points and earns points for
clear and correct statements that address the question(s) asked and that are not contradicted by other parts of
the answer. For answers that are incomplete, unclear and/or contain errors, partial credit is possible if the
answer offers some correct and relevant points not contradicted by other parts of the answer. For example, if
the rubric describes what is necessary for +5, it is possible for markers to award any integer between 0 and 5.
In such a case, 4 is an very good to excellent answer (A-), 3 is a fair answer (C-), 2 and 1 are marginally failing
and failing answers with something correct but major errors/omissions, and 0 for answers that are entirely
incorrect (or completely unclear) and/or do not address the question(s) asked. The rubric breaks down the
point values but only the final score for each part will be written on your paper. For example, suppose a part is
worth 10 points and the rubric describes what is expected to earn +5, +3, and +2, the marker will simply write
one mark (an integer between 0 and 10) for that part (e.g. you could see the number 8 written next to your
answer for 1a but not all the component parts). This is necessary both to make the marking and data entry
process manageable but also because sometimes a marker may be on the margin between assigning a 4 or 5
for one part and a 3 or 4 for another part, but taken together confident in assigning an 8 total (i.e. 4.5 + 3.5).
Remember to review Section 6.2 of the course syllabus.
(1) (a)
+2 Indicates that the purpose of Table 1 is to explore differences in altruism (generosity) between
males and females as income and relative price of giving vary
+2 Last column checks for statistically significant differences in altruism between the sexes
+2 Explains 0: − = 0 and 1: − ≠0 where means refer to mean
money passed to other player
+2 Correctly explains why a two-tailed test is appropriate in this context
+2 Explains that for the reported tests we have independent samples (not paired data). (+1 saying
not paired but no explanation)
(b)
+4 Correctly points out that when the relative price of giving is cheap and income is low – Budgets 1 –
3 – males are significantly more generous than females. The difference is highly statistically significant
and large: nearly a $2 difference.
+4 Correctly points out that when tokens are worth the same to both players – Budgets 4 – 5 – there is
no statistically significant difference between males and females. Further, the difference is small: less
than 20 cents.
+4 Correctly points out that when the relative price of giving is expensive and income is high – Budgets
6 – 8 – females are somewhat more generous. The differences are statistically significant at around the
usual 5% level but they are not very large: less than 40 cents in all three cases.
+2 Correctly points out that the results from ECO220Y (2015) as presented in Table 1 are completely
consistent with the abstract of A&V (2001) (excluding the last sentence).
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ECO220Y1 Full Course Notes
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