Tag: collection of data and presentation of data
Questions Related to collection of data and presentation of data
Tally marks are used find
Satish got the following marks in his weekly class tests out of $50$:
$48$, $32$, $36$, $42$, $38$, $35$, $39$, $49$, $34$, $14$, $32$, $37$, $31$ What should he expect in the next weekly test out of the following?
(i) between $40 - 50$
(ii) between $30 - 40$
12 | 24 | 36 | 48 | 60 | 72 |
---|---|---|---|---|---|
24 | 48 | 60 | 72 | 50 | 30 |
50 | 45 | 50 | 75 | 50 | 34 |
The number of students in a quiz competition scores are in the table. How many students scored $50$ marks?
Consider the following frequency distribution:
Class | $0-10$ | $0-20$ | $0-30$ | $0-40$ | $0-50$ |
---|---|---|---|---|---|
Frequency | $3$ | $8$ | $14$ | $20$ | $25$ |
What is the above frequency distribution known as?
Consider the following statements :
1. A continuous random variable can take all values in an interval.
2. A random variable which takes a finite number of values is necessarily discrete.
3. Construction of a frequency distribution is based on data which are discrete.
Which of the above statements are correct ?
The marks (out of 10) obtained by 28 students in a Mathematics test are listed as below :
8, 1, 2, 6, 5, 5, 5, 0, 1, 9, 7, 8, 0, 5, 8, 3, 0, 8, 10, 10, 3, 4, 8, 7, 8, 9, 2, 0
The number of students who obtained marks more than or equal to 5 is
The frequency distribution of marks obtained by $60$ students of a class is given.
X | $30-34$ | $40-44$ | $45-49$ | $50-54$ | $55-59$ | $60-64$ |
---|---|---|---|---|---|---|
f | $3$ | $5$ | $12$ | $18$ | $14$ | $62$ |
Find mode of the distribution.
The median and mode of frequency distribution are 525 and 500, then mean of same frequency distribution is -
Mode of distribution
$Marks\begin{bmatrix} 4 & 5 & 6 & 7 & 8 \end{bmatrix}\ No\quad of\quad students\quad \begin{bmatrix} 3 & 5 & 10 & 6 & 1 \end{bmatrix}$
The cumulative frequency distribution corresponding to 20 percentile is ______.