Stats Practical 1 2006
... (a) Given that the quoted precision (to the nearest mm) is appropriate, depict the distribution of pebble long axes on a histogram (use graph paper provided). (b) Describe the distribution qualitatively. (c) Derive the following central values: (i) mode; (ii) median; (iii) mean. (d) Describe the spr ...
... (a) Given that the quoted precision (to the nearest mm) is appropriate, depict the distribution of pebble long axes on a histogram (use graph paper provided). (b) Describe the distribution qualitatively. (c) Derive the following central values: (i) mode; (ii) median; (iii) mean. (d) Describe the spr ...
Comparing Systems Using Sample Data Experimental Methodology
... • Generally, use highest value that lets you make a firm statement – But it’s better to be consistent throughout a ...
... • Generally, use highest value that lets you make a firm statement – But it’s better to be consistent throughout a ...
2 Sample t-Test (unequal sample sizes and unequal
... We see that both bounds are negative numbers indicating that they do not encompass zero, therefore the hypothesis that there is no difference between the two samples is not supported by the data; we reject the null hypothesis in favor of the alternative, at the a = 0.05 level. The fact that both bou ...
... We see that both bounds are negative numbers indicating that they do not encompass zero, therefore the hypothesis that there is no difference between the two samples is not supported by the data; we reject the null hypothesis in favor of the alternative, at the a = 0.05 level. The fact that both bou ...
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... Since 0.7 < 1.64, we do not reject the null hypothesis significantly at a = 0.05 and conclude they should not adopt plastic 1. ii) P-value approach: P-value = P(Z > 0.7) = 0.242 > a (= 0.05 ) Since the p-value < a , we do not reject the null hypothesis significantly at a = 0.05 and conclude they sh ...
... Since 0.7 < 1.64, we do not reject the null hypothesis significantly at a = 0.05 and conclude they should not adopt plastic 1. ii) P-value approach: P-value = P(Z > 0.7) = 0.242 > a (= 0.05 ) Since the p-value < a , we do not reject the null hypothesis significantly at a = 0.05 and conclude they sh ...