Standard normal curve example sat score v verbal sat

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: o Quantitative Data v༇   DATA: Birth weight of 3,226 newborn babies v༇ Fitted Probability Model: Normal curve with µ = 3.39 Kg & σ = 0.55 Kg Departures from Normality v༇  Multimodality. More than one mode suggesting data come from distinct groups. Departures from Normality v༇  Skew- ness: Lack of symmetry. v༇  Outliers. Unusual extreme values. Empirical Rule For Normal Curves about 99.7% within 3 sd v༇  Roughly 68% of the distribution is within 1 SD of the mean (i.e. between µ-σ and µ+σ). v༇  Roughly 95% of the distribution is within 2 SD’s of the mean (i.e. between µ-2σ and µ+2σ). v༇  Roughly 99.7% of the distribution is within 3 SD’s of the mean (...
View Full Document

Ask a homework question - tutors are online