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STAT

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One of the conditions that allows us to use ANOVA safely is that of equal (population) standard deviations. Can we assume that this condition is met in this case?
here are options
(a) No, since the three sample standard deviations are not all equal.
(b) No, since the population standard deviations are not given, so we cannot check this condition.
(c) Yes, since 5.7 - 4.9 < 2.
(d) Yes, since 5.7 / 4.9 < 2.

I got answer as C, I need someone to help me confrim this because I was confused to between C and D. Please help

  • STAT (incomplete) -

    In what case?

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