Consider the following distribution. Which of the measures listed below would give the best description of the central tendency ofthese scores? 23, 24, 22, 21, 26, 56, 25, 20, 29, 63, 28 a. median b. mode c. mean d. standard deviation e. variance Consider the following sets ofscores. set A: 2 4 6 8 10 Set B: 22 24 26 28 30. Which of the following statements is (are) true? a. their variance are equal b. their standard deviations are equal c. their means are equal d. a and b are true e. all of the above are true Instruction 13-]. Peoples intelligence quotient (I.Q.) has been shown to be normally distributed with a mean of 100 and st dev of15. 9. 10. 12. Refer to Instruction 13-]. To be ofcially declared developmental delayed you must be in the bottom 2 %. of this distribution. This would mean your IQ was less than a. 100 b. 85 c 98 d. 83 e. 70 Refer to Instruction 13-]. To be labeled a genius you must have an IQ of over 140. About what percent of people does this apply to? a. 34 % b. 14 % c. 2 % d. 16 % e. less than 2 % What percentage of people will have a \"normal range" IQ if the ofcial definition of normal is an IQ is between 85 and 115? a. 34% b. 14% c. 28% d. 50% e. 68% Section A, Multiple Choice Questions (Answer by circling the BEST response) Let's assume that we have determined the marks from a recent exam. In plotting the distribution of marks we notice that they are symmetrical. For this distribution which of the following is (are) denitely true. The mean = mode mean > median mean