STATISTICS :Discuss the variability of this data? Compare the means of each

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group of data? Discuss the variability of this data?
An experiment using 0.5 grams of fresh garlic and crushed garlic root, leaf and bulb from garlic cloves sprouted for two days was performed. This garlic was used in a bioassay on lettuce seedlings to see if growth of the lettuce seedlings was inhibited compared to a control. data recorded was seedling length in milimetres.
Discuss the variability of the garlic data!
fresh garlic: 4,5,6,4,3,4,3,5,4,3
COMPARE the means of each group of data ( how do you compare this) ?
crushed sprout root: 4,5,5,5,4,3,3,5,4,3
crushed sprouted leaf:3,4,5,5,5,6,4,5,4,3
crushed sprouted bulb:3,4,5,4,5,4,5,4,4,5
control(no treatment):20,19,17,20,21,22,19,17,16,20
 
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