4. Consider the following data for three individuals: Xi 1 0 1 Yi 2 2 1 Calculate the following based on the above data (i runs from 1 to 3.) a. sum(Xi)squared b.(sumXi)squared c.sum(XiYi) d. (sumXi)(sumYi) > 5. IQ Scores for 10 students are given below as: > > 100 110 > 110 100 > 110 115 > 115 100 > 110 110 > > A. Construct a frequency distribution containing > Frequencies, relative frequency, percentages, > Cumulative frequencies, Cumulative relative frequencies > B. Find the probability/proportion of students with IQ scores less than 110. > C. Compute the median > 6. Compute the probability of getting 1 tail when tossing a coin 3 times. Please list the possible outcomes first. 7. Compute the mean, mode, median, range, Sum of squares, variance & standard deviation for these scores. Xi: 1, 0, 2, 5 Answer True or False, Correct it if false 9. The variance is the best measure of variability; it takes the original unit of measure into account. 10. The measure of Central Tendency refers to similarities among data values. 11. A relative frequency and a probability are exactly the same. 12. If sum of squares (SS) =25 and n=5, then the variance (S2) would be 2. 13. The probability values can be negative when impossible events occur. 15. In a negatively skewed distribution, the mean is always greater than the median. 17. Positively skewed curves are caused by extremely large data values