Tag: evs
Questions Related to evs
Direct respiration occurs in.
Which is not function of 'conductiing part' of respiratory system?
Choose the correct statements with regard to human respiration:
(a) Inspiration is faciliated by contraction of phrenic and internal intercostal muscles
(b) Healthy human can inhale or exhale about $2000-3000$ml of air/min
(c) Functional residual capacity represents the volume of left out air in lungs after expiration
(d) Total lung capacity is the total volume of air that would be accomodated in the lunds after forced inspiration.
Respiratory quotient for three different substrates was calculated and tubulated as shown here.
| Substrate | R.Q. |
|---|---|
| XYZ | 0.911.3 |
Identify X, Y and Z and select the correct option regarding them.
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.