Question
In: Statistics and Probability
Identify which of the following statements is true and which is false. 1) _________ For a...
Identify which of the following statements is true and which is false.
1) _________ For a set of numerical data, if the mean is larger than the median, this is evidence of right-skew.
2) _________ Negative values of the standard deviation indicate that the set of values is even less dispersed than would be expected by chance alone.
3) _________ For a set of numerical data, if the mean and the median are of equal value, this is evidence of symmetry in the data.
Solutions
Expert Solution
1.) True.
For right skewness, median <mode < mean
2.) False.
Variance and standard deviation can't take negative values. The minimum value which they can take is 0
3.) True.
For symmetrical data, mean= median= mode.
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