DACSS 601 August 2021: sathvik_iris_data_hw2

sathvik_thogaru

loading the iris dataset from the datasets package and running summary statistics on the iris data

  Sepal.Length    Sepal.Width     Petal.Length    Petal.Width   
 Min.   :4.300   Min.   :2.000   Min.   :1.000   Min.   :0.100  
 1st Qu.:5.100   1st Qu.:2.800   1st Qu.:1.600   1st Qu.:0.300  
 Median :5.800   Median :3.000   Median :4.350   Median :1.300  
 Mean   :5.843   Mean   :3.057   Mean   :3.758   Mean   :1.199  
 3rd Qu.:6.400   3rd Qu.:3.300   3rd Qu.:5.100   3rd Qu.:1.800  
 Max.   :7.900   Max.   :4.400   Max.   :6.900   Max.   :2.500  
       Species  
 setosa    :50  
 versicolor:50  
 virginica :50

finding the column nammes of the data

[1] "Sepal.Length" "Sepal.Width"  "Petal.Length" "Petal.Width" 
[5] "Species"

dim()is used to find the dimensions of the data

[1] 150   5

skim() is an alternative to summary(), quickly providing a broad overview of a data frame. It handles data of all types, dispatching a different set of summary functions based on the types of columns in the data frame.

Table 1: Data summary

Name	iris
Number of rows	150
Number of columns	5
_______________________
Column type frequency:
factor	1
numeric	4
________________________
Group variables	None

Variable type: factor

skim_variable	n_missing	complete_rate	ordered	n_unique	top_counts
Species	0	1	FALSE	3	set: 50, ver: 50, vir: 50

Variable type: numeric

skim_variable	complete_rate	mean	sd	p0	p25	p50	p75	p100	hist
Sepal.Length	1	5.84	0.83	4.3	5.1	5.80	6.4	7.9	▆▇▇▅▂
Sepal.Width	1	3.06	0.44	2.0	2.8	3.00	3.3	4.4	▁▆▇▂▁
Petal.Length	1	3.76	1.77	1.0	1.6	4.35	5.1	6.9	▇▁▆▇▂
Petal.Width	1	1.20	0.76	0.1	0.3	1.30	1.8	2.5	▇▁▇▅▃

there are 4 numeric variables and 1 factor variable which is the species. there are a total of 3 unique species in the iris

[1] setosa     versicolor virginica 
Levels: setosa versicolor virginica

the three species are setosa, versicolor and virginica

ploting iris

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For attribution, please cite this work as

sathvik_thogaru (2021, Aug. 18). DACSS 601 August 2021: sathvik_iris_data_hw2. Retrieved from https://mrolfe.github.io/DACSS601August2021/posts/2021-08-18-sathvikirisdatahw2/

BibTeX citation

@misc{sathvik_thogaru2021sathvik_iris_data_hw2,
  author = {sathvik_thogaru, },
  title = {DACSS 601 August 2021: sathvik_iris_data_hw2},
  url = {https://mrolfe.github.io/DACSS601August2021/posts/2021-08-18-sathvikirisdatahw2/},
  year = {2021}
}