Class Interval
Trending Questions
Q.
The value that is half way between the upper and lower limits of a class interval is called the
Q. In histograms, there are no gaps between consecutive rectangles.
- False
- True
Q. The following are the ages of 300 patients getting medical treatment in a hospital on a particular day
Age(in year)10−2020−3030−4040−5050−6060−70Number of patients604255705320
Form:
More than type cumulative frequency distribution. (3 mark)
Age(in year)10−2020−3030−4040−5050−6060−70Number of patients604255705320
Form:
More than type cumulative frequency distribution. (3 mark)
Q.
Draw a histogram table for the following data: [4 MARKS]
Class interval1−1011−2021−3031−40Frequency7121513
Q. State True or False.
(x2−3x)2−5(x2+3x)−y(x2+3x)+5y = (x2+3x−5)(x2+3x−y)
- True
- False
Q. Below given is the pulse count of 40 patients.
66, 79, 89, 67, 72, 82, 85, 80, 82, 81, 67, 87, 71, 68, 63, 74, 73, 86, 84, 75, 85, 80, 85, 61, 75, 85, 80, 85, 61, 75, 68, 69, 64, 75, 73, 72, 82, 76, 74, 77.
Group the data first in discontinuous class intervals such that one of the class intervals is 70-74.
Next, group the data in continuous class intervals such that one of the class intervals is 85-90.
Find the second class interval and the corresponding frequency of the class for both the groupings of the data.
66, 79, 89, 67, 72, 82, 85, 80, 82, 81, 67, 87, 71, 68, 63, 74, 73, 86, 84, 75, 85, 80, 85, 61, 75, 85, 80, 85, 61, 75, 68, 69, 64, 75, 73, 72, 82, 76, 74, 77.
Group the data first in discontinuous class intervals such that one of the class intervals is 70-74.
Next, group the data in continuous class intervals such that one of the class intervals is 85-90.
Find the second class interval and the corresponding frequency of the class for both the groupings of the data.
- 65-69, 6, 65-70, 7
- 64-69, 6, 65-70, 6
- 65-69, 6, 65-70, 6
- 65-70, 6, 65-70, 6
Q. The product of (x−3y)(x+3y)(x2+9y2)
Q. Secular trend can be measured by:
- Two methods
- Three methods
- Four methods
- Five methods
Q. A function is described as:
For the function, its range will be
For the function, its range will be
- 18>x>128
- 1>x>10
- 18<x<128
- 1<x<10
Q. There is a relationship between the frequency of data transmission (z) and the range of the drone (d); the higher the data transmission frequency, the lower is the range of the drone.
Identify the equation that defines the relation between (d) and (z).
| Frequency of data transmission (z) (in Ghz) |
5 | 10 | 0.5 |
| Range (d) (in miles) | 5 | 2.5 | 50 |
Identify the equation that defines the relation between (d) and (z).
- d=25÷z
- d=20÷z
- 25d=z
- d=25z
Q. A function is described as:
For the function, its range will be
For the function, its range will be
- 1<x<10
- 1>x>10
- 18<x<128
- 18>x>128
Q. A function is described as:
For the function, its range will be
For the function, its range will be
- 1<x<10
- 1>x>10
- 18<x<128
- 18>x>128
Q. the lower value of a class interval is called its
___________ and the upper value of a class interval is called its ___________
___________ and the upper value of a class interval is called its ___________
Q. 25(x+y)2−4(x−y)2 is equal to
- (3x−7y)(7x+3y)
- 21x2
- 25x2+29y2
- (7x+3y)(3x+7y)
Q. In histograms, there are no gaps between consecutive rectangles.
- False
- True
