Consider the following distribution of daily wages of $50$ workers of a factory.
$\begin{array}{|l|c|c|c|c|c|} \hline \text{Daily wages (in Rs.)} & 100-120 & 120-140 & 140-160 & 160-180 & 180-200 \\ \hline \text{Number of workers} & 12 & 14 & 8 & 6 & 10 \\ \hline \end{array}$
Find the mean daily wages of the workers of the factory by using an appropriate method.
$\begin{array}{|l|c|c|c|c|c|} \hline \text{Daily wages (in Rs.)} & 100-120 & 120-140 & 140-160 & 160-180 & 180-200 \\ \hline \text{Number of workers} & 12 & 14 & 8 & 6 & 10 \\ \hline \end{array}$
Find the mean daily wages of the workers of the factory by using an appropriate method.
- A$145.20$
- B$149.30$
- C$146.50$
- D$143.60$
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Similar Questions
$100$ surnames were randomly picked up from a local telephone directory and the frequency distribution of the number of letters in the English alphabets in the surnames was obtained as follows:
Number of letters $1-4$ $4-7$ $7-10$ $10-13$ $13-16$ $16-19$ Number of surnames $6$ $30$ $40$ $16$ $4$ $4$
Determine the median number of letters in the surnames. Find the mean number of letters in the surnames. Also,find the modal size of the surnames.
| Number of letters | $1-4$ | $4-7$ | $7-10$ | $10-13$ | $13-16$ | $16-19$ |
| Number of surnames | $6$ | $30$ | $40$ | $16$ | $4$ | $4$ |
Determine the median number of letters in the surnames. Find the mean number of letters in the surnames. Also,find the modal size of the surnames.
Difficult
View SolutionThe following table gives the literacy rate (in percentage) of $35$ cities. Find the mean literacy rate.
Literacy rate (in $\%$) $45-55$ $55-65$ $65-75$ $75-85$ $85-95$ Number of cities $3$ $10$ $11$ $8$ $3$
| Literacy rate (in $\%$) | $45-55$ | $55-65$ | $65-75$ | $75-85$ | $85-95$ |
| Number of cities | $3$ | $10$ | $11$ | $8$ | $3$ |
Difficult
View Solution$A$ class teacher has the following absentee record of $40$ students of a class for the whole term. Find the mean number of $days$ a student was absent.
$\begin{array}{|l|c|c|c|c|c|c|c|} \hline \text{Number of days} & 0-6 & 6-10 & 10-14 & 14-20 & 20-28 & 28-38 & 38-40 \\ \hline \text{Number of students} & 11 & 10 & 7 & 4 & 4 & 3 & 1 \\ \hline \end{array}$
$\begin{array}{|l|c|c|c|c|c|c|c|} \hline \text{Number of days} & 0-6 & 6-10 & 10-14 & 14-20 & 20-28 & 28-38 & 38-40 \\ \hline \text{Number of students} & 11 & 10 & 7 & 4 & 4 & 3 & 1 \\ \hline \end{array}$
Medium
View SolutionTo find out the concentration of $SO_{2}$ in the air (in $parts\, per\, million$,i.e.,$ppm$),the data was collected for $30$ localities in a certain city and is presented below:
Concentration of $SO_{2}$ (in $ppm$) Frequency $0.00-0.04$ $4$ $0.04-0.08$ $9$ $0.08-0.12$ $9$ $0.12-0.16$ $2$ $0.16-0.20$ $4$ $0.20-0.24$ $2$
Find the mean concentration of $SO_{2}$ in the air.
| Concentration of $SO_{2}$ (in $ppm$) | Frequency |
|---|---|
| $0.00-0.04$ | $4$ |
| $0.04-0.08$ | $9$ |
| $0.08-0.12$ | $9$ |
| $0.12-0.16$ | $2$ |
| $0.16-0.20$ | $4$ |
| $0.20-0.24$ | $2$ |
Find the mean concentration of $SO_{2}$ in the air.
Easy
View SolutionThe wickets taken by a bowler in $10$ cricket matches are as follows:
$2, 6, 4, 5, 0, 2, 1, 3, 2, 3$
Find the mode of the data.
$2, 6, 4, 5, 0, 2, 1, 3, 2, 3$
Find the mode of the data.
Easy
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