The scores (out of $100$) obtained by $33$ students in a mathematics test are as follows:
$69, 48, 84, 58, 48, 73, 83, 48, 66, 58, 84$
$66, 64, 71, 64, 66, 69, 66, 83, 66, 69, 71$
$81, 71, 73, 69, 66, 66, 64, 58, 64, 69, 69$
Represent this data in the form of a frequency distribution table.
$69, 48, 84, 58, 48, 73, 83, 48, 66, 58, 84$
$66, 64, 71, 64, 66, 69, 66, 83, 66, 69, 71$
$81, 71, 73, 69, 66, 66, 64, 58, 64, 69, 69$
Represent this data in the form of a frequency distribution table.
To represent the data in a frequency distribution table,we count the number of times each score appears (frequency).
| Scores | Frequency |
| $48$ | $3$ |
| $58$ | $3$ |
| $64$ | $4$ |
| $66$ | $7$ |
| $69$ | $6$ |
| $71$ | $3$ |
| $73$ | $2$ |
| $81$ | $1$ |
| $83$ | $2$ |
| $84$ | $2$ |
| Total | $33$ |
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If the mean of $18, 2x, 27, 12, 3x, 5x$ and $21$ is $24,$ then find $x$.
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View SolutionRepresent the following data by means of a histogram:
Class $0-5$ $5-10$ $10-20$ $20-30$ $30-50$ $50-70$ Frequency $5$ $7$ $12$ $16$ $24$ $16$
| Class | $0-5$ | $5-10$ | $10-20$ | $20-30$ | $30-50$ | $50-70$ |
|---|---|---|---|---|---|---|
| Frequency | $5$ | $7$ | $12$ | $16$ | $24$ | $16$ |
Find the mean,the median,and the mode of the observations:
$33, 92, 55, 90, 35, 77, 58, 41, 80, 64, 46$
$33, 92, 55, 90, 35, 77, 58, 41, 80, 64, 46$
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View Solution$30$ children were asked about the number of hours they watched $TV$ programmes last week. The results are recorded as under:
Number of hours $0-5$ $5-10$ $10-15$ $15-20$ Frequency $8$ $16$ $4$ $2$
Can we say that the number of children who watched $TV$ for $10$ or more hours a week is $22$? Justify your answer.
| Number of hours | $0-5$ | $5-10$ | $10-15$ | $15-20$ |
| Frequency | $8$ | $16$ | $4$ | $2$ |
Can we say that the number of children who watched $TV$ for $10$ or more hours a week is $22$? Justify your answer.
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View SolutionMode of the data $15, 14, 19, 20, 14, 15, 16, 14, 15, 18, 14, 19, 15, 17, 15$ is
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