Consecutive triangular numbers
Use inductive reasoning to answer. If you add two consecutive triangular numbers, what kind of figurate number do you get?
A. a pentagonal number
B. a hexagonal number
C. the next traingular number
D. a square number
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What differentiates ratio data from data that are only interval?
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What is the range width of the actual number of people present at the Station at any given moment? (For concreteness, assume the fluctuations do not exceed one sigma.)
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