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by: Alexus Hill

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# Statisctics Final Exam MATH 1231 Intoductory Statistics

Alexus Hill
Clayton State
GPA 3.5

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Vocab Review
COURSE
Introduction to Statistics
PROF.
TYPE
Class Notes
PAGES
3
WORDS
KARMA
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## Popular in Mathematics (M)

This 3 page Class Notes was uploaded by Alexus Hill on Wednesday May 4, 2016. The Class Notes belongs to MATH 1231 Intoductory Statistics at Clayton State University taught by in Spring 2016. Since its upload, it has received 23 views. For similar materials see Introduction to Statistics in Mathematics (M) at Clayton State University.

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Date Created: 05/04/16
Intro to Statistics N OTES FOR FINAL !!!! This Final will cover all content from the entire semester. Happy Studying  *Look for my practice study guide test coming soon* Vocab to know Statistical Significance- is indicated when methods of statistics are used to reach a conclusion that is unlikely that the findings occurred by chance. Nominal- just categorical (lowest) Ordinal- you can put them in order, but the differences are meaningless. Interval- you can put them in order, but there is no starting point (differences have meaning) Ratio- you can put them in order, has a starting point and differences have meaning. Cluster- randomly selected groups from preselected groups Stratified – randomly selected individual from preselected groups Continuous- range of possible numbers (ex. Numbers that can be represented in decimal) Discrete- e▯a▯t ▯u▯▯er ▯e▯. How ▯a▯▯ is a doze▯…e▯a▯tl▯ ▯▯▯ Random- each individual has same chance Simple Random- every possible sample has the same chance of being chosen (ex. Picking all names out of a hat) Parameter- is a numerical measurement describing some characteristic of a population. Statistic- is a numerical measurement describing some characteristics of a sample. Cross sectional- data observed, measured and collected at one point in time. Retrospective- data collected from the past through examination of records, interviews and so on Prospective- data collected in the future from groups sharing common factors Observation study -observe and measure specific characteristics but we do▯’t atte▯pt to ▯odif▯ the su▯je▯t ▯ei▯g studied Experiment- we apply some treatment and then proceed to observe its effects on the subject Systematic sampling- select some starting point then select every Kth(ex.50 ) element in the population Convenience sampling- use results that are easy to get. The Class width is the difference between the two consecutive lower class lengths. Each class midpoint can be found by adding the lower class limit to the upper class limit and dividing the sum by 2. Class boundaries are the numbers used to separate classes, but without the gaps created by class limits. You can simplify the process of finding class boundaries by understanding that they basically split the difference between the end of one class and the beginning of the next class. *To calculate the class boundaries, find the average of the upper class limit and the consecutive lower class limit*. Central Limit Theorem- for all samples of size n with n>30 the sampling distribution of the mean can be approximated by the normal distribution with mean u. Range- is the difference between the maximum value and the minimum value. Confidence Intervals review 1. Critical Value 2. Margin of Error € 3. Confidence interval 4. Conclusion  Interval  Confidence level  Context  Complete sentence Just a review on somethings you may have forgotten. Good luck and happy studying! 

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