Which of the following statement is incorrect about measures of central tendency? a. The value of the mean may or may not be an actual value from the data set.b. The value of the median may or may...

Which of the following statement is incorrect about measures of central tendency? a. The value of the mean may or may not be an actual value from the data set. b. The value of the median may or may not be an actual value from the data set. c. Mean is strongly influenced by outliers or extreme values. d. Mode is always present in all data set. Which of the following is not true about the normal curve?  a. The tails of the curve are asymptomatic to the horizontal line. b. The number of data points at both sides of the curve is the same c. The two sides of the normal curve is symmetrical with respect to the center. d. The measures of central tendency all coincide at the center.