Topic of interest: Comparing the typical Bill Length in the population of Adelie, Chinstrap and Gentoo penguins. 2. Data
-
- Site Admin
- Posts: 899603
- Joined: Mon Aug 02, 2021 8:13 am
Topic of interest: Comparing the typical Bill Length in the population of Adelie, Chinstrap and Gentoo penguins. 2. Data
ST2002 Assignment 3: One Way ANOVA Your Name Question of Interest Subjective impression: ## # A tibble: 3 x 6 species variable mean median ## <fct> <chr> <dbl> <dl> <db1> <dbl> ## 1 Adelie bill_length_mm 151 38.8 38.8 2.66 ## 2 Chinstrap bill_length_mm 68 48.8 49.6 3.34 ## 3 Gentoo bill_length_mm 123 47.5 47.3 3.08 n sd 60 50 Bill length (mm) 40 Adelle Gentoo Chinstrap Species
Bill Length (mm) by Species Gentoo - Bill Length (mm) 60 50 Species Chinstrap 40 30 Adelie - . 30 50 60 40 Bill Length (mm) One-way ANOVA Df Sum Sq Mean Sq F value Pr(>F) ## species 27194 3597 410.6 <2e-16 *** ## Residuals 339 2970 9 ## Signif. codes: @**** 0.001 '**' 0.01 0.05 '.' 0.1'' 1 ## 2 observations deleted due to missingness ## Tukey multiple comparisons of means ## 95% family-wise confidence level ## Fit: aov (formula = bill_length_mm - species, data - penguins) ## ## $species ## diff lwr upr ## Chinstrap-Adelie 18.842433 9.024859 11.8600064 0.000000 ## Gentoo-Adelie 8.713487 7.867194 9.5597807 0.000000 ## Gentoo-Chinstrap -1.328945 -2.381868 -0.2760231 0.0988993 ## p adj
95% family-wise confidence level Chistro Adele H Gentoo-Adole antoo-Chistrap to Differences in mean levels of species Assumptions ## # A tibble: 3 x 2 ## species FL.sd <fct> <dbl> ## 1 Adelie 2.66 ## 2 Chinstrap 3.34 ## 3 Gentoo 3.08