Give five examples of primary data that you can collect from your day-to-day life.
(N/A) Primary data is the data collected by the investigator herself or himself for a specific purpose. Five examples of primary data from day-to-day life are:
$1$. Number of students in your class who wear spectacles.
$2$. Number of family members in the houses of your neighborhood.
$3$. Number of hours you spend studying each day for a week.
$4$. Number of vehicles passing through your street in a specific hour.
$5$. Number of goals scored by your favorite football team in their last $5$ matches.
$1$. Number of students in your class who wear spectacles.
$2$. Number of family members in the houses of your neighborhood.
$3$. Number of hours you spend studying each day for a week.
$4$. Number of vehicles passing through your street in a specific hour.
$5$. Number of goals scored by your favorite football team in their last $5$ matches.
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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 SolutionThe following table gives the frequencies of most commonly used letters $a, e, i, o, r, t, u$ from a page of a book:
Letters $a$ $e$ $i$ $o$ $r$ $t$ $u$ Frequency $75$ $125$ $80$ $70$ $80$ $95$ $75$
Represent the information above by a bar graph.
| Letters | $a$ | $e$ | $i$ | $o$ | $r$ | $t$ | $u$ |
| Frequency | $75$ | $125$ | $80$ | $70$ | $80$ | $95$ | $75$ |
Represent the information above by a bar graph.
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View SolutionRepresent the following data by a bar graph:
Name of student Kavya Ariv Ahaan Arya Arushi Marks scored $90$ $80$ $50$ $60$ $40$
| Name of student | Kavya | Ariv | Ahaan | Arya | Arushi |
| Marks scored | $90$ | $80$ | $50$ | $60$ | $40$ |
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View SolutionDraw a histogram for the data given below:
Class $0-6$ $6-12$ $12-18$ $18-24$ $24-30$ $30-36$ Frequency $7$ $10$ $12$ $15$ $10$ $6$
| Class | $0-6$ | $6-12$ | $12-18$ | $18-24$ | $24-30$ | $30-36$ |
| Frequency | $7$ | $10$ | $12$ | $15$ | $10$ | $6$ |
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View SolutionIf $\bar{x}$ represents the mean of $n$ observations $x_{1}, x_{2}, \ldots, x_{n},$ then the value of $\sum_{i=1}^{n}(x_{i}-\bar{x})$ is
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