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Table 8 Analysis of variance (ANOVA) between and within ginger samples at 95% confidence level

From: Levels of essential and non-essential metals in ginger (Zingiber officinale) cultivated in Ethiopia

Metal Comparision SD df F calculated F critical Remark
Ca Between samples 255 3 4.96 4.07 Significant difference between sample means
Within samples 51.4 8
Mg Between samples 650 3 14.2 4.07 Significant difference between sample means
Within samples 45.6 8
Cu Between samples 1.58 3 8.32 4.07 Significant difference between sample means
Within samples 0.19 8
Zn Between samples 9.96 3 5.89 4.07 Significant difference between sample means
Within samples 1.69 8
Mn Between samples 100 3 13.8 4.07 Significant difference between sample means
Within samples 7.27 8
Ni Between samples 1.38 3 3.14 4.07 No significant difference between sample means
Within samples 0.44 8
Fe Between samples 21.7 3 5.09 4.07 Significant difference between sample means
Within samples 4.28 8
Co Between samples 2.72 3 9.38 4.07 Significant difference between sample means
Within samples 0.29 8
Cr Between samples 2.02 3 4.93 4.07 Significant difference between sample means
Within samples 0.41 8
Cd Between samples 0.29 3 7.25 4.07 Significant difference between sample means
Within samples 0.04 8
  1. where, SD - is standard deviation of between sample and within sample and df - is degree of freedom of between sample and within sample.