Given the table: Class Interval 10 – 15 15 – 20 20 – 25 25 – 30 30 – 35 Frequency 5 7 4 6 8 The class mark for the second class is

Related MCQs

• Given a table: Value (greater than) 100 150 200 250 Frequency 50 32 9 0 The number of observations between 150 and 200 is
• Consider the following data: Marks in 0 – 9 10 – 19 20 – 29 30 – 39 40 – 49 Total Mathematics No. of students (f) 10 8 12 15 5 50 Frequency density of the second class is
• The frequencies of three class intervals 54 – 58, 59 – 63, 64 – 68 of a distribution are respectively 4, 8 and 12. The frequency density of the 2nd class is
• For a given frequency distribution C.V = 30%, variance = 36 and Pearson’s Coefficient of Skewness = - 0.25, the mode of the distribution is
• For a frequency distribution coefficient of skewness = 0.6; mean = 172 and mode = 163. The value of the variance is
• For a frequency distribution mean = 68.2; median = 69 and coefficient of skewness of the distribution is – 0.6. The variance of the distribution is
• The 1st and 3rd quartiles of a frequency distribution are respectively 25 and 45. If the coefficient of skewness be – 0.1, then the median is
• Given : Q3 – Q1 = 8, Q3 + Q1 = 22, Median (Q2) = 10.5. The coefficient of skewness is
• Two variables x and y are given by the relation y = 3x – 2. If the mode of x be 5, the mode of y will be