Phy astrgsueduhbasemathimmathgaudsgif a bit of

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: of the sample in interval. •  Useful for numerical data CalculaBng a Histogram •  Data: 1, 2, 4 (only three observaBons) •  Bins (0 to 3), (3 to 6) •  First bin has 2 observaBons •  Second bin has one observaBon •  Height of first bar: 2/3 •  Height of second bar 1/3 Lots of histograms are sort of “normal” The exact “bell- shape” up to stretch and slide h]p://hyperphysics.phy- astr.gsu.edu/hbase/math/immath/gauds.gif A bit of terminology •  Numerical •  Categorical: Ordinal •  Categorical: Nominal •  1, 2, 17.2 •  High, Medium, Low •  Male, Female Pie Chart Bar Charts Like a histogram, but, technically, different: not intervals for numerical; values for categorical. CumulaBve Frequency The slope of the cumulaBve frequency line reflects the density of observaBons. CalculaBng cumulaBve...
View Full Document

Ask a homework question - tutors are online