* Encoding: UTF-8.
MEANS time BY SES. 
EXAMINE VARIABLES=time BY SES
  /PLOT=BOXPLOT   /STATISTICS=NONE /NOTOTAL.

*Indikátorové (dummy) kódování. 1 HI, 2 MID, 3 LO. 
RECODE SES (1 = 1) (2 THRU 3 = 0) INTO VYS.
RECODE SES (1 = 0) (2 =1) (3 = 0) INTO STR.
EXECUTE.

REGRESSION   /DEPENDENT time   /METHOD=ENTER VYS STR.

*Efektové kódování. 1 HI, 2 MID, 3 LO. 
RECODE SES (1 = 1) (2 = 0) (3 = -1) INTO VYS_ef.
RECODE SES (1 = 0) (2 =1) (3 = -1) INTO STR_ef.
EXECUTE.

REGRESSION   /DEPENDENT time   /METHOD=ENTER VYS_ef STR_ef.



ONEWAY time BY SES.

*Kódování specifických kontrastů. 1 HI, 2 MID, 3 LO. 
RECODE SES (1 = 0.5) (2 = 0.5) (3 = -1) INTO H1.
RECODE SES (1 = 1) (2 =-1) (3 = 0) INTO H2.
EXECUTE.
RECODE SES (1 = 1) (2 = 1) (3 = -2) INTO H1b.
RECODE SES (1 = 1) (2 =-1) (3 = 0) INTO H2b.
EXECUTE.


REGRESSION   /DEPENDENT time   /METHOD=ENTER H1 H2.
REGRESSION   /DEPENDENT time   /METHOD=ENTER H1b H2b.

ONEWAY time BY SES
  /CONTRAST=0.5 0.5 -1 
  /CONTRAST=1 -1 0 
  /ES=OVERALL CONTRAST(POOLED)
  /STATISTICS DESCRIPTIVES HOMOGENEITY
  /PLOT MEANS
  /MISSING ANALYSIS
  /CRITERIA=CILEVEL(0.95).