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Which of the following choices is the standard deviation of the sample shown here?
19, 20, 21, 22, 23
A. sqrt2
B. 2
C. 21
D. sqrt2.5
E. 2.5
Answers: 2
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For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.
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Which of the following choices is the standard deviation of the sample shown here?
19, 20, 21, 22,...
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