EXERCISE 14.1 1. State a common experience in which you collect data to get an information. 2. Suppose you visited a met
State a common experience in which you collect data to get an information.
Suppose you visited a meteorological centre and collected the record of the
maximum temperature on all days of the month July 2007. Is this a primary on
a secondary data ?
The performance given in grades of 45 students of a class are as follows
(A+, A, B+, B, C+, C and D are the 7 grades).
A,B, C, C, C, D, A+, B, B1, B, B+, C,,C, D, A+
B+, A, A+, C, C+, A, B, B, C, D, A, B, B+, B, C
B, B+, B, B+, B+, A, C, C, C+, A, A+, B, B, Ç, A.
Construct a frequency distribution to represent the data. Determine the grądes
which are obtained by the maximum and minimum number of students. Find also
the median grade. Which one of the measures of central tendency is not
determinable for this non-numerical data ?