© 2009 -2011 tutorco.com 1 Q1. The following is a stem-plot of the birth weights of male babies born to a group of mothers who smoked during pregnancies. The stems are in units of kg. Stems Leaves 2 3, 4, 6, 7, 7, 8, 8, 8, 9 3 2, 2, 3, 4, 6, 7, 8, 9 4 1, 2, 2, 3, 4 5 3, 5, 5, 6 The median birth weight is: a) 13.5 b) 3.2 c) 3.5 d) 3.7 STATISTICS TOPIC: DATA ANALYSIS Stats_3_Post © 2009 -2011 tutorco.com 2 Q2. Find the new mean, median, mode and range of the given data set and of the data set obtained by multiplying each data value by 7.5. 48, 47, 47, 48, 55, 51, 46, 53, 46, 44, 48 a) 363.38, 360, 345, 82.5 b) 363, 360.5, 340, 82.5 c) 363.38, 360, 345, 83 d) 363.38, 360 © 2009 -2011 tutorco.com 3 Q3. Study the data for Infant Mortality Rate, the number of infant deaths per 1,000 live births, of countries in Western Africa. What are the values of mean and range? a) 100 b) 113.87, 100 c) 113.87, 151 d) None © 2009 -2011 tutorco.com 4 Q4. Write the five number summary for the following: a) 105, 130, 155 b) 155, 175, 235 c) 155, 130 d) 105, 130, 155, 175, 235 Q5. The mean weight of per student in a group of 9 students is 65 Kg. The individual weights of 6 of them in Kg are 64, 61, 62, 71 and 64. The weight of seventh student is: a) 73 Kg b) 70 Kg c) 45Kg d) 50 Kg