How are the observations within each class typically treated when calculating the approximate mean in grouped data?

• A) They are ignored due to the loss of identity in grouped data
• B) They are assumed to be equal to the upper limit of the class interval
• C) They are assumed to be identical to the midpoint of the class interval
• D) They are assumed to be equal to the lower limit of the class interval

The component bar chart is also known as the _______________ bar chart.

• A) simple
• B) horizontal
• C) subdivided
• D) multiple

Statistics is a numerical quantity which is calculated from ........

• A) sample
• B) observation
• C) population
• D) data

The __________ is used when we cannot give equal weight to each value.

• A) harmonic mean
• B) arithmetic mean
• C) median
• D) weighted mean

In ......bar chart,the basis of comparison is one dimensional.

• A) all of these
• B) simple
• C) Component
• D) multiple

If we have available to us information regarding totals and their components then the ______________ bar chart should be used.

• A) line
• B) simple
• C) component
• D) multiple

The performance of players is rated as excellent, good, fair or poor is an example of the __________ scale.

• A) interval
• B) nominal
• C) ratio
• D) ordinal

In a pie chart, the slices (sectors) of the pie represent portions of the ______________.

• A) whole
• B) three quarters
• C) quarter
• D) half

What characterizes a bi-modal frequency distribution?

• A) It has a one mode
• B) It has a symmetric shape
• C) It has two modes
• D) It has no distinct mode

${\text{In}}\,{\text{the}}\,{\text{given}}\,{\text{formula}}\,{\text{ }}\hat X = l + \frac{{{f_m} - {f_1}}}{{({f_m} - {f_1}) + ({f_m} - {f_2})}} \times h,{\text{ }}{f_m} = \_\_\_\_\_\_\_\_\_\_.$

• A) frequency of the modal class
• B) frequency of the class following the modal class
• C) frequency of the class preceding the modal class
• D) cumulative frequency

What term is used to refer to the midpoint of each class in a frequency distribution?

• A) Class interval
• B) Class boundary
• C) Class mark
• D) Class median

If for a given problem, the domain of a variable contains only one value, then the variable is referred to as a __________.

• A) continuous
• B) constant
• C) qualitative
• D) ordinal

How is the arithmetic mean calculated?

• A) By finding the value with the highest frequency
• B) By finding the difference between the highest and lowest values
• C) By adding up all values and dividing by the total count
• D) By finding the middle value in a sorted dataset

If no. of students from category A=719 and from category B=481 and total no. of students is 1200 then percentage of students of Category A =……

• A) (719+1200)/100
• B) (719-1200)/100
• C) (481/1200)*100
• D) (719/1200)*100

The mode of the data 2.7, 3.5, 4.9, 5.1, 8.3 is....

• A) 5.1
• B) 3.5
• C) there is no mode for this data
• D) 4.9

The given set of all possible values from which a variable take on a value is called its........

• A) Data
• B) None of these
• C) Range
• D) Domain

A simple bar graph consists of _____________ bars of equal width and lengths proportional to values they represent.

• A) (III) slant
• B) (IV) Both (I) or (II).
• C) (I) horizontal
• D) (II) vertical

The most frequent value in the data is called………..

• A) midrange
• B) median
• C) mean
• D) mode

A matrix with dimension 1 \times n is known as _________.

• A) null matrix
• B) singular matrix
• C) column matrix
• D) row matrix

The matrix $A = \left[ {\begin{array}{*{20}{c}} 1 \\ 5 \\ {10} \end{array}} \right]$ is a _________ matrix.

• A) singular
• B) column
• C) null
• D) row