The data which can take only whole number values is called continuous data.
True
False
When the class intervals are so arranged that the upper limit of one class is the lower limit of the next class, it is called exclusive or continuous class interval.
True
False
Raw data is already arranged in a meaningful format.
True
False
There are two types of class intervals—exclusive and continuous.
True
False
A bar graph is a graphical representation of numerical data in the form of rectangles (or bars) of equal width and varying heights.
True
False
The data arranged in increasing or decreasing order is called an arrayed data.
True
False
The data that can take decimal values also is called discrete data.
True
False
Raw data is also termed as grouped data.
True
False
Tally marks are recorded in a group of 4.
True
False
Class marks = (Upper limit – Lower limit) ÷ 2
True
False
Click the correct answer.
Which of the following represents the number of times an observation occurs in a data?
Range
Frequency
Class size
None of them
Which of the following is also known as the class marks of an interval?
Width of class interval
Class size
Mid-value of class interval
Class limit
What is the range of data 6, 12, 9, 15, 8, 5, 14, 7, 6, 3?
13
10
11
12
Which of the following is also known as the inclusive class intervals?
Discontinuous class intervals
Continuous class intervals
Unequal class intervals
Higher class intervals
What should be done to convert 1–5, 7–11, 13–17, ... into exclusive class intervals?
Add 0.5 to the upper limit and subtract 0.5 from the lower limit.
Add 1 to the lower limit and subtract 1 from the upper limit.
Add 0.5 to the lower limit and subtract 0.5 from the upper limit.
Add 1 to the upper limit and subtract 1 from the lower limit.
Which of the following depends on the numerical value of the data represented in a bar graph?
Height of the rectangle
Length of the rectangle
Area of the rectangle
All of them
Which is true about the class intervals 0–4, 5–9, 10–14, ..?
They are exclusive class intervals.
They are inclusive class intervals.
Their class size is 4.
Their class size is 6.
What is the class mark of the class interval 1.5–18.5?
20
10
15
17
If the range of data is 250 and the class interval is 50, what is the number of classes?
5
7
9
8
Click the correct answer.
Data is of
types.
two
three
four
To avoid errors in counting a large number of observations, vertical bars or lines called
are used to mark the frequencies.
range
rectangles
tally marks
The first class interval of any grouped frequency distribution contains the
of the data.
maximum value
all values
minimum value
The last class interval of any grouped frequency distribution contains the
of the data.
minimum value
maximum value
all values
The number of observations falling in a particular class is called the
.
tally
range
frequency
The range of 46, 35, 73, 60, 65, 83, 80 is
.
38
48
58
A
is a pictorial representation of numerical data in the form of rectangles of equal width and varying heights.
