Watch the video on “Mean, Median and Mode ” and answer:

• a)  Why is “4” the mean for the original data set?
• b)  What two mathematical operations we combine to calculate the mean?
• c)  Find the mean of {6, 7, 3, 4, 5}
• d)  If the data set has an even number of members, how do we find the median?
• e)  What is the median of {8, 3, 4, 5}
• f)  Can a data set have no mode? Why?
• g)  Can a data set have more than one mode? Why?