6 If the mean Hemoglobin concentration of a sample of patients is 10 g/dL and their variance is 100 g/dL, so this sample has a) Normal distribution b) Non-normal distribution IV 100 SO =10 c) A SD which equals 100 d) A Mean which equals its median e) A mode equals 30 7 Square root of variance is called: (a) Standard deviation (b) Standard error (c) Mean deviation (d) Range (e) Interquartile range √ varia =SD

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