Find the standard deviation of the data summarized in the given frequency table.The test scores of 40 students are summarized in the frequency table below. Find the standard deviation. 
A. 12.2
B. 12.8
C. 14.2
D. 13.5
Answer: D
Mathematics
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Determine convergence or divergence of the series.
A. Converges B. Diverges
Mathematics
Find the foci of the given hyperbola.
- 
= 1
A. (2, 0), (-2, 0) B. (0, 8), (0, -8) C. (0, 2), (0, -2) D. (8, 0), (-8, 0)
Mathematics
Find the center of the ellipse. 4(x - 1)2 + 25(y - 5)2 = 100
A. (5, 1) B. (1, 5) C. (-1, -5) D. (4, 25)
Mathematics
Based on the ordered pairs seen in the pair of tables, make a conjecture as to whether the function defined in Y1 is even, odd, or neither even nor odd.
A. Neither even nor odd B. Even C. Odd
Mathematics