Measures of Central Tendancy Review 1

# Measures of Central Tendancy Review 1 - MDM 4UI Unit 3...

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MDM 4UI Unit 3 Review Measures of Central Tendency and Spread NOTE: Unless otherwise specified, you may use ANY acceptable method to calculate your statistics. 1. For the following set of data, find each of the listed statistics by hand : 245,143,34,42,123,543,24,64,256,542,246,98 a) mean b) median c) mode d) range e) interquartile range 2. Explain the difference between symmetric data, left-skewed data and right-skewed data, making reference to the mean and the median . 3. Lulu’s quiz marks were 67, 45, 55, and 60 for the first four days of the week. By the end of Friday, her mean quiz mark for the five days was 58. What was her quiz mark on Friday? 4. The number of repairs performed on each car owned by ABC rental cars is listed in the table below. Number of Repairs 0-4 5-9 10-14 15-19 20-24 25-29 Frequency 25 15 6 3 2 4 Calculate the mean, median and mode and modal interval for number of repairs. 5. In a Grade 12 course, term work counts for 65% of the final mark and the exam counts for 35%.

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