Sample QuestionsData Handling – I (Presentation of Data) questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
The final marks in mathematics of $30$ students are as follows:
$53, 61, 48, 60, 78, 68, 55, 100, 67, 90$
$75, 88, 77, 37, 84, 58, 60, 48, 62, 56$
$44, 58, 52, 64, 98, 59, 70, 39, 50, 60$
What is the range?
View full solution →Define the following terms: Frequency distribution.
The weights of new born babies (in kg) in a hospital on a particular day are as follows: $2.3, 2.2, 2.1, 2.7, 2.6, 3.0, 2.5, 2.9, 2.8, 3.1, 2.5, 2.8, 2.7, 2.9, 2.4$ How many babies were born on that day?
View full solution →Define the following terms: Frequency of an observation.
The final marks in mathematics of $30$ students are as follows: $53, 61, 48, 60, 78, 68, 55, 100, 67, 90 75, 88, 77, 37, 84, 58, 60, 48, 62, 56 44, 58, 52, 64, 98, 59, 70, 39, 50, 60$ Which observations between $50$ and $60$ have not actually appeared?
View full solution →The final marks in mathematics of $30$ students are as follows: $53, 61, 48, 60, 78, 68, 55, 100, 67, 90 75, 88, 77, 37, 84, 58, 60, 48, 62, 56 44, 58, 52, 64, 98, 59, 70, 39, 50, 60$ If $40$ is the pass mark how many have failed$?$
View full solution →The final marks in mathematics of $30$ students are as follows: $53, 61, 48, 60, 78, 68, 55, 100, 67, 90 75, 88, 77, 37, 84, 58, 60, 48, 62, 56 44, 58, 52, 64, 98, 59, 70, 39, 50, 60$ How many have scored $75$ or more$?$
View full solution →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,$$ 62, 56 44, 58, 52, 64, 98, 59, 70, 39, 50, 60$ Arrange these marks in the ascending order $30$ to $39$ one group, $40$ to $49$ second group, etc.
View full solution →Prepare a frequency table of the following scores obtained by $50$ students in a test: $42, 51, 21, 42, 37, 37, 42, 49, 38, 52, 7, 33, 17, $$44, 39, 7, 14, 27, 39, 42, 42, 62, 37, 39, 67, 51, 53, 53, 59, 41, 29, 38,$ $27, 31, 54, 19, 53, 51, 22, 61, 42, 39, 59, 47, 33, 34, 16, 37, 57, 43$
View full solution →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.
View full solution →A die was thrown $25$ times and following scores were obtained:
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$1$
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$5$
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$2$
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$4$
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$3$
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$6$
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$1$
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$4$
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$2$
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$5$
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$1$
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$6$
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$2$
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$6$
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$3$
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$5$
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$4$
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$1$
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$3$
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$2$
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$3$
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$6$
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$1$
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$5$
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$2$
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Prepare a frequency distribution table. View full solution →Following is the choice of sweets of $30$ students of class VI: Ladoo, Barfi, Ladoo, Jalebi, Ladoo, Rasgulla, Jalebi, Ladoo, Barfi, Rasgulla, Ladoo, Jalebi, Jalebi, Rasgulla, Ladoo, Rasgulla, Jalebi, Ladoo, Rasgulla, Ladoo, Rasgulla, Jalebi, Ladoo, Rasgulla, Ladoo, Ladoo, Barfi, Rasgulla, Rasgulla, Ladoo.
$i.\ $Arrange the names of sweets in a table using tally marks.
$ii.\ $Which sweet is preferred by most of the students?
View full solution →In a mathematics test following marks were obtained by $40$ students of class $VI$. Arrange these marks in a table using, tally marks.
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$8$
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$1$
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$3$
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$7$
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$6$
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$5$
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$5$
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$4$
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$4$
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$2$
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$4$
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$9$
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$5$
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$3$
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$7$
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$1$
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$6$
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$5$
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$2$
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$7$
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$7$
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$3$
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$8$
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$4$
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$2$
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$8$
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$9$
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$5$
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$8$
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$6$
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$7$
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$4$
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$5$
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$6$
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$9$
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$6$
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$4$
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$4$
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$6$
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$6$
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$i.\ $Find how many students obtained marks equal to or more than $7$?
$ii.\ $How many students obtained marks below $4$? View full solution →Following figures relate the weekly wages $($in $Rs.)$ of $15$ workers in a factory: $300, 250, 200, 250, 200, 150, 350, 200, 250, 200, 150, 300, 150, 200, 250$ Prepare a frequency table
$i.\ $What is the range in wages $($in $Rs.)$?
$ii.\ $How many Workers are getting $Rs. 350$?
$iii.\ $How many of workers are getting the minimum wages?
View full solution →