The blood groups of $30$ students are recorded as follows:
$A, B, O, A, AB, O, A, O, B, A, O, B, A, AB, B, A, AB, B$
$A, A, O, A, AB, B, A, O, B, A, B, A$
Prepare a frequency distribution table for the data.
$A, B, O, A, AB, O, A, O, B, A, O, B, A, AB, B, A, AB, B$
$A, A, O, A, AB, B, A, O, B, A, B, A$
Prepare a frequency distribution table for the data.
To prepare the frequency distribution table,we count the occurrences of each blood group in the given data:
$1$. Count of $A$: $12$
$2$. Count of $B$: $8$
$3$. Count of $AB$: $4$
$4$. Count of $O$: $6$
Total count = $12 + 8 + 4 + 6 = 30$.
$1$. Count of $A$: $12$
$2$. Count of $B$: $8$
$3$. Count of $AB$: $4$
$4$. Count of $O$: $6$
Total count = $12 + 8 + 4 + 6 = 30$.
| Blood Group | No. of students (frequency) |
| $A$ | $12$ |
| $B$ | $8$ |
| $AB$ | $4$ |
| $O$ | $6$ |
| Total | $30$ |
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Prepare a continuous grouped frequency distribution from the following data:
Mid-point Frequency $5$ $4$ $15$ $8$ $25$ $13$ $35$ $12$ $45$ $6$
Also,find the size of the class intervals.
| Mid-point | Frequency |
| $5$ | $4$ |
| $15$ | $8$ |
| $25$ | $13$ |
| $35$ | $12$ |
| $45$ | $6$ |
Also,find the size of the class intervals.
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View SolutionDraw a histogram for the following frequency distribution with unequal class length:
Class $0-5$ $5-10$ $10-20$ $20-30$ $30-50$ $50-70$ $70-100$ Frequency $6$ $8$ $14$ $16$ $24$ $20$ $30$
| Class | $0-5$ | $5-10$ | $10-20$ | $20-30$ | $30-50$ | $50-70$ | $70-100$ |
| Frequency | $6$ | $8$ | $14$ | $16$ | $24$ | $20$ | $30$ |
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View SolutionThe frequency distribution is given below:
Marks $0-20$ $20-40$ $40-60$ $60-100$ Number of Students $10$ $15$ $20$ $25$
This distribution has been represented graphically as shown in the image. Is this representation correct? Explain.
| Marks | $0-20$ | $20-40$ | $40-60$ | $60-100$ |
| Number of Students | $10$ | $15$ | $20$ | $25$ |
This distribution has been represented graphically as shown in the image. Is this representation correct? Explain.
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