\({ D }_{ 2 }\bar { R } \)

\({ D }_{ 2 }\overset { = }{ R } \)

\({ D }_{ 3 }\overset { = }{ R } \)

\({ D }_{ 3 }\bar { R } \)

\(\bar { X } +{ A }_{ 2 }\bar { R } \)

\(\overset { = }{ X } +{ A }_{ 2 }R\)

\(\overset { = }{ X } +{ A }_{ 2 }\bar { R } \)

\(\overset { = }{ X } +{ A }_{ 2 }\overset { = }{ R } \)

x_max - x_min

x_min - x_max

\(\overset{-}{x}\)_max - \(\overset{-}{x}\)_min

\(\overset{=}{x}\)_max - \(\overset{=}{x}\)_min

attribute control chart

variable control chart

neither Attribute nor variable control chart

both Attribute and variable control chart

CL, UCL

CL, LCL

CL, LCL, UCL

UCL, LCL

poor raw materials

unskilled labour

faulty machines

all of them

random cause

non-random cause

human cause

all of them

4

3

2

1

p - chart

c – chart

x bar chart

np – chart

Laspeyre’s method

Paasche’s method

Marshall Edgeworth method

Fisher’s ideal method

Laspeyre’s Index number

Paasche’s Index number

Fisher Index number

All of them

Paasche’s formula

Fisher’s ideal formula

Marshall Edgeworth formula

Family budget method formula

Volume index number

Value index number

Price index number

Simple index number

110

108

100

109

Consumer price index

Value index

Volume index

Un-weighted index

Whole-sale price index number

Cost of living index

Sensitive

Composite

A number of years

within a year

within a month

within a week

Cyclic variation

Secular variations

Irregular variation

Seasonal variations

Always positive

Always negative

Either positive or negative

Zero

Most exact

Least exact

Full of subjectivity

Mathematically unsolved

y = T + S + C × I

y = T + S × C × I

y = T + S + C + I

y = T + S × C + I

Weather

Festivals

Social customs

All the above

Secular trend

Seasonal variations

Cyclic variation

Irregular variation

Five components

Four components

Three components

Two components