TY  - BOOK
AU  - Downie,N.M.
AU  - Heath,R.W.
TI  - Basic statistical methods
U1  - 311.2 
PY  - 1959///
CY  - New York
PB  - Harper
KW  - Average
KW  - Regression analysis
KW  - Probabilities
N1  - Includes index
ER  -