Study Guides (248,280)
Canada (121,450)
York University (10,193)
ADMS 2320 (97)
Quiz

Formula sheet - Test One.docx

3 Pages
150 Views
Unlock Document

Department
Administrative Studies
Course
ADMS 2320
Professor
Marwan Hassan
Semester
Winter

Description
Formula Sheet Formula Sheet Formula Sheet – ADMS 2320 – Prof. Yogi Formula Sheet Formula Sheet 1 - Descriptive stats deals with organizing, summarizing, presenting data in a convenient/informative/useful way. - Inferential stats is a body of methods used to draw conclusions or inferences about characteristics of population based on sample data - Population is the group of all items of interest to a statistics practitioner(entire set of observations under study)  descriptive measure is parameter - Sample is a set of data drawn from the studied population(is a subset of a population)  descriptive measure for samp is statistic - Statistical inference is the process of making an estimate, prediction, decision about a population based on sample data - Confidence level is the proportion of times that an estimating procedure will be correct - Significance level measures how frequently the conclusion will be wrong - Descriptive stats includes graphical and tabular statistical methods Interval may be T into ordinal/nominal 2 - Variable is some characteristic of a population/sample Ordinal may be T into nominal - Values of variable are the possible observations of the variable Nominal X - Data are the observed values of a variable - Interval data are real numbers (height/weight/distance) Also called quantitive or numerical - Nominal data are categories (1=married, 2=single) Also called qualitative or categorical - Ordinal data show that the order of the values have meaning (poor fair good v.good) - Two methods for nominal data are graphical/tabular freq.distribution/rel.freq.distribution – bar chart/pie chart - Techniques applied to single set of data is univirate; bivirate.  to compare two nominal data used classification cross / bar chart(2&more) - Number of Classes  1+3.3log(n) n=no of observations 3 - Class width  Range/Classes - Three shapes of histograms 1. Symmetrical 2. Positively Skewed 3. Negatively Skewed - Unimodal has one peak, Bimodal has two peaks. - Bell-shaped histogram - Ogive – cumulative relative frequency on y axis - For interval data use ogive - For time-series data use line chart - Relationship between two variables is measured by scatter diagram - Three relationships 1.Strong linear relat
More Less

Related notes for ADMS 2320

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit