. Frequency of a variable is always:

1. A fraction.
2. In percentage.
3. An integer.
4. None of these.

 In an ordered series, the data are:

1. In descending order.
2. In ascending order.
3. Either (1) or (2).
4. None of these.

 A frequency distribution table showing value of sales in different columns and advertisement expenditure in different rows is termed as:

1. bilateral frequency distribution.
2. univariate frequency distribution.
3. multivariate frequency distribution.
4. None of these.

The number of observations falling within a class is called:

1. Density.
2. Frequency.
3. Both (1) and (2).
4. None of these.

For determining the class frequencies, it is necessary that these classes are:

1. Mutually exclusive.
2. Not mutually exclusive.
3. Independent.
4. None of these.

The upper limit of class-intervals is considered for calculating:

1. ‘Less than’ cumulative frequency.
2. ‘More than’ cumulative frequency.
3. Relative frequency.
4. None of these.

 The following alternatives is true?

The frequency distribution of two variables is known as:

1. Univariate Distribution.
2. Bivariate Distribution.
3. Multivariate Distribution.
4. None of the above.

 The Frequency distribution of a continuous variable is known as:

1. Grouped frequency distribution.
2. Simple frequency distribution.
3. Either (1) or (2).
4. Both (1) and (2).

 The characteristic of a fact that can be measured in the form of numerical aptitude refers to:

1. Variable.
2. Attribute.
3. Frequency.
4. None of the above.

 Nationality of a student is:

1. An attribute.
2. A discrete variable.
3. A continuous variable.
4. Either (1) or (3).

A grouped frequency distribution with uncertain first or last class is known as:

1. Exclusive class distribution.
2. Inclusive class distribution.
3. Open end distribution.
4. Discrete frequency distribution.

For the mid-values given: 25, 34, 43, 53, 61, 70, the first class of the distribution is:

1. 25-34
2. 24.5-34.5
3. 20-30
4. 20.5-29.5

A frequency distribution is comprehensive way to classify _______________ data of a quantitative variable:

1. Meaningful.
2. Financial.
3. Economical.
4. Raw.

Which of the following is the objective of classification?

1. Simplification.
2. Briefness.
3. Comparability.
4. All of these.

Which is an attribute out of the following?

1. Height.
2. Weight.
3. Intelligence.
4. Age.

Classes with zero frequencies are called:

1. Class.
2. Empty class.
3. Nil class.
4. None of these.

Annual income of a person is:

1. A continuous variable.
2. A discrete variable.
3. An attribute.
4. (3) and (1).

 In a frequency distribution, the class may be:

1. Singular or plural.
2. Subjective or objective.
3. Individual or discrete.
4. Inclusive or exclusive.

Statistical calculations in classified data are based on:

1. The actual values of the items.
2. The upper class limits.
3. The lower class limits.
4. The mid-points.

In an individual series, each variate value has:

1. Varied frequency.
2. Frequency one.
3. Same frequency.
4. Frequency two.

 An attribute is:

1. A qualitative characteristic.
2. A measurable characteristic.
3. A quantitative characteristic.
4. All these.

 In the construction of a frequency distribution, it is generally preferable to have classes of:

1. Equal width.
2. Unequal width.
3. Maximum width.
4. None of these.

 The change in the value of continuous variable can occur:

1. Only in integral values.
2. Only in fractional values.
3. In both integral and fractional values.
4. None of the above.

Classification of population of India in terms of years is an example of:

1. Geographical classification.
2. Chronological classification.
3. Quantitative classification.
4. Qualitative classification.

A series showing the sets of all distinct values individually with their frequencies is known as:

1. Grouped frequency distribution.
2. Simple frequency distribution.
3. Cumulative frequency distribution.
4. None of these.

An employer wants to make transfers for his employees to other branches for which he needs to divide them into five groups. He considered the place of residence to make a decision. He made use of:

1. Quantitative Classification on.
2. Qualitative Classification.
3. Chronological Classification.
4. Spatial Classification.

13 A continuous series can be of which of the following types?

1. Inclusive series.
2. Exclusive series.
3. Mid value series.
4. Both (1) and (2).

Upper limit of any class is:

1. Same.
2. Different.
3. Both (1) and (2) are possible.
4. None of these.

When raw data is classified on the basis of time period, it is referred to as:

1. Chronological Classification.
2. Spatial Classification.
3. Qualitative Classification.
4. Quantitative Classification.

 In exclusive class intervals of a frequency distribution:

1. Upper limit of each class-interval is excluded.
2. Lower limit of each class-interval is excluded.
3. Both (a) and (c)
4. None of these.

 Tally marks determines:

1. Class width.
2. Class boundary.
3. Class limit.
4. Class frequency.

If we group students in a class on the basis of their marks, we are making use of:

1. Quantitative Classification.
2. Qualitative Classification.
3. Chronological Classification.
4. Spatial Classification.

The lower class boundary is:

1. An upper limit to lower class limit.
2. A lower limit to lower class limit.
3. Both (1) and (2).
4. None of these.

The frequency distribution of a single variable is called:

1. Bivariate distribution.
2. Univariate distribution.
3. Cumulative frequency distribution.
4. Discrete variable distribution.

Mutually exclusive classification is usually meant for:

1. An attribute.
2. A continuous variable.
3. A discrete variable.
4. Any of these.

For the construction of a grouped frequency distribution, we take:

1. Class boundaries.
2. Class limits.
3. Both (1) and (2).
4. None of these.

In the exclusive method:

1. He upper class limit is excluded but lower class limit is included.
2. The lower class limit is excluded but upper class limit is included.
3. Both the upper class limit and lower class limit are included.
4. None of these.

Daily pocket money of five students of class XI are as follows: 20, 25, 40, 45, 60. What will be the range of the data?

1. 40
2. 25
3. 30
4. 60

 The difference between upper limit and lower limit of a class is known as:

1. Range.
2. Magnitude of a class interval.
3. Frequency.
4. Class limits.

 Statistical calculations in classified data are based on:

1. The class midpoints.
2. The upper class limits.
3. The actual value of observation.
4. The lower class limits.

 Drinking habit of a person is:

1. An attribute.
2. A discrete variable.
3. A variable.
4. A continuous variable.

 Classification of data on the basis of time period is called:

1. Geographical classification.
2. Chronological classification.
3. Qualitative classification.
4. Quantitative classification.

A teacher divided her students in two groups on the basis of the game they play. She made use of:

1. Quantitative Classification.
2. Qualitative Classification to all.
3. Chronological Classifications.
4. Spatial Classification.

A series showing the sets of all values in classes with their corresponding frequencies is known as:

1. Grouped frequency distribution.
2. Cumulative frequency distribution.
3. Simple frequency distribution.
4. None of the above.

 Objects are classified as living and nonliving. This is an example of:

1. Geographical classification.
2. Chronological classification.
3. Qualitative classification.
4. Quantitative classification.

The data classified with reference to countries is called:

1. Spatial.
2. Chronological.
3. Both (1) and (2).
4. None of these.

The most important aspect of organizing data is to __________ it:

1. Tabulate.
2. Tdit.
3. Classify.
4. None of these.

 The class marks of a distribution are 26, 31, 36, 41, 46 and 51. Then the first-class interval is:

1. 23.5-28.5

2. 23-28
3. 22.5-27.5
4. None of these.

The arrangement of raw data in ascending or descending order of magnitude is referred as:

1. Array.
2. Frequency distribution.
3. Tally bars.
4. Series.

 Class mid-values of a frequency distribution of marks (in statistics) of students of class XI are given as 46, 53 and 60 What will be the size of the class?

1. 5
2. 7
3. 10
4. 15

In case of inclusive method:

1. Upper limit of class interval is excluded.
2. Lower limit of class interval is excluded.
3. Both upper limit and lower limit are included.
4. Both upper limit and lower limit are excluded.

In inclusive class-intervals of a frequency distribution:

1. Upper limit of each class-interval is included.
2. Lower limit of each class-interval is included.
3. Both (1) and (2).
4. None of these.

 Mutually exclusive classification:

1. Excludes the upper-class limit but includes the lower-class limit.
2. Excludes both the class limits.
3. Includes the upper-class limit but excludes the upper-class limit.
4. Either (2) or (3).

When data are classified on the basis of time, it is known as:

1. Conditional classification.
2. Geographical classification.
3. Chronological classification.
4. None of the above.

A frequency distribution can be:

1. Discrete.
2. Continuous.
3. Both (1) and (2).
4. None of these.

Formula for finding mid-value is given by:

1. I2 − I1

2. l2 − l12
3. I1 + I2
4. l1 + l22

Range is the:

1. Difference between the largest and the smallest observations.
2. Division between the smallest and the largest observations.
3. Average of the largest and the smallest observations.
4. Ratio of the largest to the smallest observations.

The lower-class boundary is:

1. An upper limit to Lower Class Limit.
2. A Lower limit to Lower Class Limit.
3. Both (1) and (2).
4. None of these.

 Are the following alternatives true?

Range is the:

1. Difference between the largest and the smallest observations.
2. Difference between the smallest and the largest observations.
3. Average of the largest and the smallest observations.
4. Ratio of the largest to the smallest observation.

Range of a frequency distribution is equal to:

1. Largest value-Smallest value.
2. Number of classes x Class Interval (when class intervals are the same).
3. Both (1) and (2).
4. None of the above.

The value exactly at the middle of a class -interval is called:

1. Class mark..
2. Mid-value.
3. Both (1) and (2).
4. None of these.

A variable which can take integral as well as fractional values is known as:

1. Discrete variable.
2. Continuous variable.
3. Constant variable.
4. All of the above.

 A continuous variable can take:

1. integral values.
2. discrete values.
3. Both (1) and (2).
4. None of these.

When we want to classify the data given in numerical terms, which method of classification of data is used?

1. Qualitative classification.
2. Quantitative classification.
3. Chronological classification.
4. Conditional classification.

 From the following data, how much percent of person are earning more than 1499:

1. 50%

2. 45%
3. 40%
4. 60%

In a series, the number of times an item occurs is known as:

1. Number.
2. Class frequency.
3. Frequency.
4. Cumulative frequency.

Raw data is made comprehensible by:

1. Collection of data.
2. Classification of data.
3. Organization of data.
4. Presentation of data.

 Are the following alternatives true?

The class midpoint is equal to:

1. The average of the upper class limit and the lower class limit.
2. The product of the upper class limit and the lower class limit.
3. The ratio of the upper class limit and the lower class limit.
4. None of the above.

 Under exclusive method:

1. The upper class limit of a class is excluded in the class –interval.
2. The upper class limit of a class is included in the class-interval.
3. The lower class limit of a class is excluded in the class interval.
4. The lower class limit of a class is included in the class interval.

Most extreme values which are never included in a class-interval are called:

1. Class-interval.
2. Class limits.
3. Cass boundaries.
4. None of these.

_______ are the two ends of a class:

1. Class limits.
2. Class widths.
3. Class frequencies.
4. None of these.