Question 12 Marks
The final marks in mathematics of $30$ students are as follows: $53, 61, 48, 60, 78, 68, 55, 100, 67, 90 75, 88, 77, 37, 84, 58, 60, 48, 62, 56 44, 58, 52, 64, 98, 59, 70, 39, 50, 60$ Arrange these marks in the ascending order. $30$ to $39$ one group, $40$ to $49$ second group, etc.
AnswerAscending order of the numbers in groups$: (30-39): 37, 39 (40 – 49): 44, 48, 48 (50 – 59): 50, 52, 53, 55, 56, 58, 58, 59 (60 – 69): 60, 60, 60, 61, 62, 64,$ $ 67, 68 (70 – 79):70, 75, 77, 78 (80 – 89): 84, 88 (90 – 99): 90, 98 (100-109): 100$
View full question & answer→Question 22 Marks
In a study of number of accidents per day, the observations for $30$ days were obtained as follows:
|
$6$
|
$3$
|
$5$
|
$6$
|
$4$
|
$3$
|
$2$
|
$5$
|
$4$
|
$2$
|
|
$4$
|
$2$
|
$1$
|
$2$
|
$2$
|
$0$
|
$5$
|
$4$
|
$6$
|
$1$
|
|
$6$
|
$0$
|
$5$
|
$3$
|
$6$
|
$1$
|
$5$
|
$5$
|
$2$
|
$6$
|
Prepare a frequency distribution table. AnswerRequired frequency-distribution table:
|
Number of Accidents
|
Number of Days
|
|
$0$
|
$2$
|
|
$1$
|
$3$
|
|
$2$
|
$6$
|
|
$3$
|
$3$
|
|
$4$
|
$4$
|
|
$5$
|
$6$
|
|
$6$
|
$6$
|
View full question & answer→Question 32 Marks
A die was thrown $25$ times and following scores were obtained:
|
$1$
|
$5$
|
$2$
|
$4$
|
$3$
|
|
$6$
|
$1$
|
$4$
|
$2$
|
$5$
|
|
$1$
|
$6$
|
$2$
|
$6$
|
$3$
|
|
$5$
|
$4$
|
$1$
|
$3$
|
$2$
|
|
$3$
|
$6$
|
$1$
|
$5$
|
$2$
|
Prepare a frequency table of the scores. Answer
|
Score
|
Number of Times
|
|
$1$
|
$5$
|
|
$2$
|
$5$
|
|
$3$
|
$4$
|
|
$4$
|
$3$
|
|
$5$
|
$4$
|
|
$6$
|
$4$
|
View full question & answer→Question 42 Marks
Prepare a frequency table of the following ages (in years) of $30$ students of class $VIII$ in your school:$13, 14, 13, 12, 14, 13, 14, 15, 13, 14, 13, 14, 16, 12, 14$
$13, 14, 15, 16, 13, 14, 13, 12, 17, 13, 12, 13, 13, 13, 14$
AnswerFrequency Distribution Table is:
|
Ages (in years)
|
Number of Students
|
|
$12$
|
$4$
|
|
$13$
|
$12$
|
|
$14$
|
$9$
|
|
$15$
|
$2$
|
|
$16$
|
$2$
|
|
$17$
|
$1$
|
View full question & answer→Question 52 Marks
Following data gives the number of children in $40$ families: $1, 2, 6, 5, 1, 5, 1, 3, 2, 6, 2, 3, 4, 2, 0, 0, 4, 4, 3, 2 2, 0, 0, 1, 2, 2, 4, 3, 2, 1, 0, 5, 1, 2, 4, 3, 4, 1, 6, 2$ Represent it in the form of a frequency distribution.
AnswerRequired frequency-distribution table:
|
Number of children
|
Frequency
|
|
$0$
|
$5$
|
|
$1$
|
$7$
|
|
$2$
|
$11$
|
|
$3$
|
$5$
|
|
$4$
|
$6$
|
|
$5$
|
$3$
|
|
$6$
|
$3$
|
View full question & answer→