rock

How To Create a Barplot

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How To Create a Stacked Barplot

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How To Create a Pie Chart

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How To Compute the Mean

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How To Create a Plot

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How to Compute the Median

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Boxplot

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Correlation Coefficient

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Cumulative Frequency Histogram

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Dotplot

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Hollow Histogram

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Numerical Summaries

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Pie Chart

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Plot

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Regression

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Stem and Leaf Plots

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Visual Summaries

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Submitted by admin on February 26, 2017 - 11:28 AM
<iframe src="https://embed.picostat.com/rock.html" frameBorder="0" width="100%" height="307px" />
Attachment Size
dataset-90525.csv 1.27 KB
Documentation

Measurements on Petroleum Rock Samples

Measurements on 48 rock samples from a petroleum reservoir.

Usage

rock

Format

A data frame with 48 rows and 4 numeric columns.

[,1] area area of pores space, in pixels out of 256 by 256
[,2] peri perimeter in pixels
[,3] shape perimeter/sqrt(area)
[,4] perm permeability in milli-Darcies

Details

Twelve core samples from petroleum reservoirs were sampled by 4 cross-sections. Each core sample was measured for permeability, and each cross-section has total area of pores, total perimeter of pores, and shape.

Source

Data from BP Research, image analysis by Ronit Katz, U. Oxford.

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