(Context: The JMC's scoring system is as follows: There are 25 questions on the paper, which lasts 1 hour. 5 marks are awarded for each correct answer between Q1-15. 6 marks are awarded for each correct answer between Q16-25) Gill sat the JMC last year, when the scoring system used was the same as this year’s system. She answered all the questions she did correctly. The first question took her 1 second, question 2 took her 2 seconds, question 3 took her 4 seconds and so on, the time doubling for each question. What was Gill’s score?

Name and describe the three most important measures of central tendency. choose the correct answer below. a. the mean, sample size, and mode are the most important measures of central tendency. the mean of a data set is the sum of the observations divided by the middle value in its ordered list. the sample size of a data set is the number of observations. the mode of a data set is its highest value in its ordered list. b. the sample size, median, and mode are the most important measures of central tendency. the sample size of a data set is the difference between the highest value and lowest value in its ordered list. the median of a data set is its most frequently occurring value. the mode of a data set is sum of the observations divided by the number of observations. c. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is the product of the observations divided by the number of observations. the median of a data set is the lowest value in its ordered list. the mode of a data set is its least frequently occurring value. d. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is its arithmetic average. the median of a data set is the middle value in its ordered list. the mode of a data set is its most frequently occurring value.