ILRstats exam 1 review

ILRstats exam 1 review - Prelim 1 Review 16:26 Types of...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Prelim 1 Review 16:26 Types of graphs Scatter plots Box plots Stem and leaf Bar graph/histogram Summary statistics Statistics are an attempt to understand the world through the collection and processing of information Characterizing distributions Normal distribution Unimodal Unimodal and symmetric is what you want to have because approximate distribution well Bimodal, has two humps 68% of data is within 1 standard deviation 95% of data is within 2 standard deviations 99.5% of data is within 3 standard deviations Types of data Quantitative data Is numerical and tells you about the cases Discrete: count data (school size, wildlife pop, # pop w/ tv) Continuous: age, income, weight, volume, distance Categorical Values vary in kind and have no arithmetic mean Nominal: gender, colors, race, religion Ordinal: disease symptoms, self-esteem, letter grade, customer satisfaction Measuring association
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
S trength How close the number is to 1 or -1 D irection Positive or negative association F orm Linear
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 3

ILRstats exam 1 review - Prelim 1 Review 16:26 Types of...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online