Levene's Test for Equality of Variances
t-test for Equality of Means
F
Sig.
t
df
Sig. (2-tailed)
Pb ug/gm
Equal variances assumed
8.876
.004
4.911
98
.000
Equal variances not assumed
8.395
79.332
.000
Table 4:
Result of Independent Sample T-Test for Lead Concentration