Define the terms:
Frequency of an observation
Frequency of an observation
51 questions across 4 question groups — pick any mix to generate a Maths paper with step-by-step answer keys.
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
| Height (in cm) | $156$ | $154$ | $155$ | $151$ | $157$ | $152$ | $153$ |
| Number of students | $8$ | $4$ | $10$ | $6$ | $7$ | $3$ | $12$ |
| Marks obtained | $15$ | $17$ | $20$ | $22$ | $25$ | $30$ |
| Number of students | $2$ | $5$ | $10$ | $12$ | $8$ | $4$ |
| Weight (in kg) | $48$ | $50$ | $52$ | $54$ | $58$ |
| Number of players | $4$ | $3$ | $2$ | $2$ | $1$ |
| Daily wages (in Rs) | $300$ | $375$ | $450$ | $525$ | $600$ |
| Number of workers | $6$ | $8$ | $9$ | $12$ | $10$ |
| Daily wages (in Rs.) | $280$ | $300$ | $320$ | $360$ | $380$ |
| Number of workers | $14$ | $16$ | $15$ | $7$ | $8$ |
| Height (in cm) | $165$ | $170$ | $175$ | $180$ |
| Number of boys | $9$ | $8$ | $11$ | $12$ |
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