Question
✓
Answer
$(i)$ $Q_1=₹ 514.29, Q_3=₹ 780$
$\therefore$ The amount of bill will be between $₹ 514.29$ and $₹ 780$ for the central $50 \%$ customers.
$(ii)$ $P_{90}=D_9=₹ 892.5$
$\therefore$ The amount of bill will be between $₹ 514.29$ and $₹ 780$ for the central $50 \%$ customers.
$(ii)$ $P_{90}=D_9=₹ 892.5$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A machine is purchased in $Rs. 10,600.$ The depreciation on the machine is calculated at the rate of $10\%$ per annum. What will be the estimated value of the machine at the end of four years?
→The data of daily average income (in $₹$ ) for $40$ hawkers of a city are as follows. Prepare an exclusive frequency distribution having classlength $100$ and midvalue of one of the classes as $650$ .
$\text{539 476 513 436 453 670 953 972 691 587}$
$\text{822 999 469 447 442 680 513 560 737 687}$
$\text{1044 891 560 481 478 460 476 563 558 1080}$
$\text{1033 707 660 602 503 493 504 443 550 900}$
→$\text{539 476 513 436 453 670 953 972 691 587}$
$\text{822 999 469 447 442 680 513 560 737 687}$
$\text{1044 891 560 481 478 460 476 563 558 1080}$
$\text{1033 707 660 602 503 493 504 443 550 900}$
Obtain an inclusive continuous frequency distribution from the following data.
→|
Lower boundary point or more than that
|
$44.5$
|
$49.5$
|
$54.5$
|
$59.5$
|
$64.5$
|
$69.5$
|
$74.5$
|
$79.5$
|
|
Cumulative frequency
|
$500$
|
$470$
|
$390$
|
$290$
|
$240$
|
$90$
|
$10$
|
$0$
|
The number of cheques deposited in a bank per day has the following frequency distribution :
Find the median number of cheques deposited.
Find the median number of cheques deposited.
The marks obtained by $60$ students in an examination are as follows. Find the mean marks of the students.
→| Marks | $0 – 10$ | $10 -20$ | $20 – 25$ | $25 -30$ | $30 – 35$ | $35 – 40$ |
| No. of students | $3$ | $8$ | $20$ | $16$ | $9$ | $4$ |
Kush bought a motorcycle for $₹ 70,000$. If its cost reduces by $15 \%$ every year, what will be the value of the motorcycle at the end of the fourth year ?
→Find the minimum value of $n$ such that the sum of the first $n$ terms of a $G.P.$ $1,2,2^2, 2^3, \ldots$ is greater than or equal to $2000.$
→
The total cost function for a factory is $y = 10 + 3x$ where $x =$ No. of units produced and $y =$ total cost of producing $x$ units. The range, the quartile deviation, the mean deviation and standard deviation of daily production of the factory are $50, 5, 8$ and $10$ units respectively. Find the range quartile deviation mean deviation and standard deviation for total cost y from it.
→