QUES ASSIGNMENT 6: STATISTICAL TECHNIQUES IN BUSINESS QUESTION 1 (20) The custo several cc able give In each of the following statements, fill in the missing word(s). 1.1. In a data set, the mean, median and mode are measures of (2) 1.2. "The manipulation of variables under controlled conditions" is the data collection method known as (2) 1.3. In a normal distribution, the area between z = 0.80 and z = 2.80 is (2) 1.4. A box contains 4 red balls, 6 blue balls and 10 green balls. If a ball is randomly selected from the box, the (2) probability of it not being blue is and completely 1.5. The two outcomes of a binomial experiment must be mutually (4) (2) 1.6. The most passive data collection method is known (2) 1.7. The number of houses on a street is quantitative and 1.8. In linear regression and correlation, a Pearson's correlation coefficient of -0.35 indicates a and relationship between the independent and dependant variables. (20) QUESTION 2 The number of aces served by Novak Djokovic in the last 20 tournaments that he has participated in, is shown below. 17 7 13 8 6 14 15 12 15 12 24 11 18 10 19 14 5 9 11 13 (2) 2.1. Using the raw data, determine the range. (7 2.2. Group the data into a frequency distribution with a lowest class lower limit of 1 ace and a class width of 5 aces. CE 2.3. Determine the mean number of aces served, using the raw data. 2.4. Draw a less than OGIVE curve corresponding to the data and use it to estimate the median