Organisation of data

Question 1

What do you mean by raw data?

Answer 1

Unclassified data, which is unorganised and offers no meaning or conclusions

Question 2

What is the meaning of classification?

Answer 2

When collected data is classified into groups and sub groups, according to some common characteristics

Question 3

What are the objectives of classification?

Answer 3

1. To simplify and condense mass data.
2. Explain similarities and dissimilarities of data.
3. Allows for comparison.
4. Prepares data for tabulation.
5. Presents a mental picture.

Question 4

What are the four methods of classification?

Answer 4

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

Question 5

What is geographical classification also known as?

Answer 5

Spatial classification

Question 6

What is geographical classification?

Answer 6

When data is classified, according to location or region, like countries, state, district

Question 7

What is chronological classification also known as?

Answer 7

Temporal classification

Question 8

What is chronological classification?

Answer 8

When data is classified with respect to different time, periods, decade, years months

Question 9

What is qualitative classification?

Answer 9

When data is classified on the basis of descriptive characteristic, which are not inherently numerical, but can later be quantified through analysis

Question 10

What are the two types of qualitative classification?

Answer 10

1. Simple classification
2. Manifold classification

Question 11

What do you mean by simple classification?

Answer 11

When facts are classified into two groups using ONLY ONE ATTRIBUTE. Eg: population -male,female

Question 12

What do you mean by manifold classification?

Answer 12

When facts are classified using MORE THAN ONE ATTRIBUTE.

Question 13

What do you mean by quantitative classification?

Answer 13

When data is collected on the basis of characteristics, which can be quantified like height, weight, income

Question 14

In statistics, only those values are considered as variable __________

Answer 14

Which can be expressed numerically

Question 15

What are the two variables?

Answer 15

Discrete and continuous

Question 16

Variables which can take no fractional values are known as?

Answer 16

Discrete variables

Question 17

Continuous variable is the variable _______

Answer 17

Which can take all possible, values, integral, or fractional

Question 18

In discrete variable, how is data obtained?

Answer 18

By counting

Question 19

In continuous variable, how is data obtained?

Answer 19

By measurement

Question 20

What are the two types of statistical series?

Answer 20

1. On the basis of characteristics.
2. On the basis of construction.

Question 21

Three series, which come under on the basis of characteristics

Answer 21

1. Time series.
2. Spatial series.
3. Condition series.

Question 22

Three types of series on the basis of construction

Answer 22

1. Individual series.
2. Discrete series.
3. Continuous series.

Question 23

What are time series?

Answer 23

When data is arranged in chronological order

Question 24

What are spatial series?

Answer 24

When data is arranged on the basis of location

Question 25

What are condition series?

Answer 25

Data classified according to changes occurring under certain conditions

Question 26

What are the two types of individual series?

Answer 26

1. Organised series. 2. Unorganised series.

Question 27

What is unorganised individual series?

Answer 27

Unarranged mass of raw data

Question 28

What are organised individual series?

Answer 28

The orderly arrangement of raw data. This may be presented according to serial number or in ascending or descending order

Question 29

What are discrete series?

Answer 29

Series in which individual values differ from each other by definite amount

Question 30

What are the two types of discrete series?

Answer 30

1. Tally marks 2. Relative frequency distribution.

Question 31

What is a class?

Answer 31

Group of Number, in which items are placed

Question 32

What are class limits?

Answer 32

Lowest and highest value of variables

Question 33

What is difference between lower limit and upper limit called

Answer 33

Class interval

Question 34

Formula width of class interval?

Answer 34

Largest observation - smallest observation/ number of classes desired

Question 35

What is range?

Answer 35

The difference between the lower limit of the first class and upper limit of the last class

Question 36

What is central point of class interval called?

Answer 36

Mid value

Question 37

What are the types of continuous series?

Answer 37

1. Exclusive series. 2. Inclusive series. 3. Cumulative frequency 4. Open-end distribution. 5. Mid Value series. 6. Equal or unequal series.

Question 38

Cumulative frequency “ less than“ type, how is calculated?

Answer 38

From top to bottom

Question 39

How is the more than type of cumulative frequency calculated?

Answer 39

From bottom to top