TY  - BOOK
AU  - Gupta, B.D
AU  - Gupta, O.P
TI  - Mathematical statistics
U1  - 519.5 
PY  - 1979///
CY  - meerut
PB  - Kedar Nath Ram Nath and company
KW  - Statistics
KW  - Collection of data
KW  - Diagramatic representation
KW  - Mathematical expectations
ER  -