Novak Djokovic played in 25 tennis tournaments in 2021. The prize money (in $) that he won at each of these tournaments is shown in the frequency distribution below. Prize money (millions of $) Frequency 0.5 < 1.0 1.0 < 1.5 1.5 < 2.0 2.0 < 2.5 2.5 < 3.0 3.0 < 3.5 (1) (ii) (iii) (iv) (v) (vi) 1 9 10 6 3 1 25 Show that q = 4. (2) Calculate the estimated mean prize money. (8) Compute the median. (5) Determine the mode. (5) What information about the skewness of the data can be inferred from your answers to (ii), (iii) and (iv) above? (2) Calculate the standard deviation. (8)