I wanted to know if the pollen counts differ between four cities in the US: Los Angeles, Austin, Portland, and NY. I too
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I wanted to know if the pollen counts differ between four cities in the US: Los Angeles, Austin, Portland, and NY. I too
t-Test: Two-Sample Assuming Unequal Variances t-Test Two-Sample Assuming Unequal Variances t-Test: Two-Sample Assuming Unequal va LA 4.63 0.83 NY 1.58 1.13 25 Austin 5.63 0.84 25 Portland 1.72 0.24 25 25 Austin Mean 5.63 Variance 0.84 Observations 25 Hypothesized Meal 0 df 48 Stat 3.87 PfTct) one-tail 0.000164 t Critical one-tail 1.68 P(Tt) two-tail 0.000328 t Critical two-tail 2.01 0 Mean Variance Observations Hypothesized Mean df t Stat P( Tt) one-tail t Critical one-tail P( Tt) two-tail t Critical two-tail Austin 5.63 0.84 25 0 47 14.41 3.63E-19 1.68 7.26E-19 2.01 Mean Variance Observations Hypothesized Mean df t Stat P( Tt) one-tail t Critical one-tail P( Tt) two-tail t Critical two-tail 37 18.80 8.01E-21 1.69 1.6E-20 2.03 t-Test: Two-Sample Assuming Unequal Variances t-Test: Two-Sample Assuming Unequal Variances t-Test: Two-Sample Assuming Unequal Va LA 4.63 0.83 25 NY 1.58 1.13 Portland 1.72 0.24 Portland 1.72 0.24 25 25 0 25 Mean Variance Observations Hypothesized Meal df t Stat P( Tt) one-tail t Critical one-tail P( Tt) two-tail t Critical two-tail 47 10.88 9.75E-15 1.68 1.95E-14 2.01 Mean Variance Observations Hypothesized Mean df Stat P( Tt) one-tail t Critical one-tail P( Tt) two-tail t Critical two-tail LA 4.63 0.83 25 0 37 14.07 9.96E-17 1.69 1.99E-16 2.03 NY Mean 1.58 Variance 1.13 Observations 25 Hypothesized Mean 0 df 34 t Stat -0.58 PIT-t) one-tail 0.282882 t Critical one-tail 1.69 P( Tt) two-tail 0.565764 t Critical two-tail 2.03
Does this test violate any assumptions? If so, select all that apply below. Normality Independent groups No assumptions were violated Random sample O Same variance