Answer:
When it is skewed right or left with high or low outliers then the median is better to use to find the center. The best measure of spread when the median is the center is the IQR. As for when the center is the mean, then standard deviation should be used since it measure the distance between a data point and the mean.
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<em><u>Hope this helps..</u></em></h2>
i think it is the last one
