Descriptive Statistics notes

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This page gathers over 20 Descriptive Statistics notes on data types, averages, dispersion and charts. University students and professional candidates can use them to practise these topics, school students can revise them, and teachers can find ready-made material; most notes are university level, with some for school students. Pick a note to begin.

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Information Processing Qualitative Data- describes nominal categorical aspects often presented in tabular form, usually comprise absolute or relative frequenciesOrdinal Data - represents observable quantifications (eg: disease stages, ... Michael Riben
Untitled What Is Central Tendency? Central tendency is defined as the typical value of a set of data. There are three main ways that we measure central tendency: mean, median, and mode. The m... Danyelle Wilson
Module 2 Notes Measures of Central Location: Median - If the data set contains an odd number of values, the median is one of the values. If there is an even number of values in the data set, the median is not necessarily one of the ... jbbacik
STATISTICS 1 Topic 1: Mathematical Models and Topic 2: Locationmathematical model=simplification of real world situationnumerical data- quantitative; non numerical data- qualitativecontinuous variable takes any value in given rang... Rachael Toon
Statistics Ch 3 Statistics 3.1Compute the mean of a data set Arithmetic mean/mean- average Mean=sum of data points/# of data points We will round the mean to one more decimal place than the Σ x=x1+x2+...+xn Sample mean: mean of a sam... Sarah Paige
STAT Chapter 2 What To Know (a) Be able to understand and read a frequency distribution table, a bar chart, and a pie chart. (b) Given raw data, be able to calculate angles in pie charts, heights of bars in bar charts, and any of the entries in ... Brianna Nelson
Measures of Dispersion The Range The Mean Absolute Deviation Population Variance and Population Standard Deviation Sample Variance and Sample Standard Deviation Semi-variance, Semi-deviation and Related Concepts (not a LO) Chebyshev’s Inequ... GSDhindsa
L2 - Descriptive Statistics Annicka Brosnan
Section 1 - Learning from data - created from Mind Map Types of variable Qualitative data - take values from a set of categories Quantitative data - take values on a numerical scale Data sets Nominal - no natural order Ordinal - natural order e.g. colour, address e.g. deg... eb414
Organizing, Visualizing and Describing Data - created from Mind Map Classify Data Central Tendency Dispersion Mau Hoang
Measures of Central Tendency Measures of central tendency Data Types Nominal - names and labels w/o quantity and no order ranking Ordinal - ranking order Interval- constant equal distances between values; arbitrary zero age, education, temp, test... Kendall B
Chapter 2F-1/2: Describing the center and spread of symmetric distribution and standard deviation Choosing between the mean and median If the distribution is: Symmetric and there are no outliers, either the mean or median can be used to indicate the center of the data. Skewed and/or there are outliers, it is ... Weaving TUACH
STATISTICS - creado desde un Mapa Mental ¿ What is it ? You can do the analysis by is a branch of mathematics dealing with the collection, analysis, interpretation, presentation and organization of data Andres Peñuela Gonzalez
Z scores Sometimes we want to do more than summarize a bunch of scores. Sometimes we want to talk about particular scores within the bunch. We may want to tell other people about whether or not a score is above or below averag... Toyin Oshodi
Bullet Points chapter 1 Simon Dman
Domain II: Data Analysis and Interpretation Definition of Basic Statistical Terms N "n" is usually used to indicate the number of subjects in a study. Example: If you have 76 participants in a study, n=76. The Three M's: Mean, Median and Mode Average rating 5.0 out of 5 (6 ratings) · Maxia Webb
Lecture 1 Introduction to Business Analytics Uncertainty-  A situation where something is not know, or something that is not known or certain.    Probability, Statistics and Business Analytics are importance... dilraj kaur
Introduction to Statistics In-Class Activity: 1. What are my goals for this class? My goal is to be able to understand how to differentiate between different articles on the same topic and determine which ones have more meaning in our practice ... Kendall B
Measurements Position - creado desde un Mapa Mental What are they? Features: Applications Angela María Márquez H.
Visual displays of data Concepts: Population: of the items of an interest Sample: a portion of the total population Raw data: new information obtained that wasn´t organized yet Quantitative data: # of items in a set Qualitative data: Quality... Omar Kim Park
Untitled    cases-  the subjects / objects that we obtain info about variable- characteristic that corresponds to each case in a dataset dataset- data is stored in this , each row represents one case and each co... Tamani Lynch
Untitled relative frequency   We calculate relative frequency using the following formula: relative frequency =no. of times an outcome happenedtotal no. of all&n... Pragathi eswari
Untitled Box Plot   5 number summary Min Lowest number Q1 Middle of Min and Median Median Middle number If median is a data set, do not include when calculating Q1 and Q3 If median is the middle of 2 data sets, include wh... Ayesha Fernandes
Displaying and describing the distribution categorical variable The frequency table is a listing of the value a variable takes in a dataset, alog with how often (frequently) each value occurs Frequency tables can be recorded as as: number: the number of the times a value... Weaving TUACH
Untitled STATISTICS:IQR:.Interquartil range (IQR) Is another measure of spread we calculate the IQR by- First find the data's median- Find the median of the first half of data (Q1)-  New Page gabriel.brodie
Ch.2 Stats 2.1- Introduction to frequency distributions  The purpose of descriptive statistics is to simplify the organization and presentation of data.  Frequency Distribution: a numerical tabulation in which the... Aiyana Trujillo
Untitled Types of datanominal or categorical data - male/femaleordinal - ranked (worse, no change, better)interval data - constant interval between adjacent units but arbitrary zero e.g. cratio data- constant interval between ... joeyyy1994
Descriptive stats module 1 Part 1 https://youtu.be/0ZKtsUkrgFQ  - video     these are various desp ways to represent datafreq plot , bar graph m], tables and other stuff     freq tables and box plots     tejesh bhalla

More Descriptive Statistics resources

All Descriptive Statistics resources Quizzes 56 Mind maps 544 Flashcards 150 Flowcharts 18

About descriptive statistics notes

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Using Descriptive Statistics notes

Start with Information Processing if you want to review qualitative data and frequencies. Its notes introduce categorical data before you move on to numerical summaries.

For a closer look at the centre of a data set, read Module 2 Notes, which discusses the median. Measures of Dispersion covers the range, variance and standard deviation. The notes called Z scores look at individual scores within a group.

Make the notes work for you

Read a short section, then cover it and explain the idea in your own words. For charts and frequency tables, use STAT Chapter 2 What To Know to identify what you need to practise.

If you want a visual overview, switch to a mind map on the unit page. When you are ready to check your understanding, try a related quiz there. Choose a topic and work through it at your own pace.

Frequently asked questions

Which note is a good place to start?

Start with Information Processing if you want to review qualitative data and frequencies. If you are focusing on the median instead, Module 2 Notes is a useful starting point. Both let you begin with a specific topic before moving to another note on the page.

What topics do these notes cover?

The notes cover qualitative and quantitative data, measures of central location, dispersion, charts and Z scores. For example, Measures of Dispersion lists the range, variance and standard deviation, while STAT Chapter 2 What To Know includes frequency tables, bar charts and pie charts.

Are the notes free to use?

Yes. Every note listed here is free to open and study without an account. The resources were made by GoConqr users. A free account also lets you save quiz scores and make your own quizzes, mind maps, flashcards and notes.