Normal Distribution & Types of Error

Lecture-7

By Dr. Atul Deshmukh

Certificate Course sponsored & Organized by
Dept. of StatisticsPCRC

Terminologies in Statistics

Characteristics

The qualities and measurements in a population which differentiate the population. e.g. age, height, weight.

Two main types of Characteristics: 1. Attribute 2. Variate/Variable

01. Attribute: Characteristic which is recorded in the data as label or text. .e.g. gender, blood group.

  • Dichotomous Attribute: When individual divided in to two groups based on attribute. For e.g: Gender: Male & Female

  • Polytomous Attribute: Attribute can be grouped into multiple categories. Blood groups.

2. Variate: A characteristic which is recorded as numerals.

  • Continuous Variable: Characteristic can assume as value in fractions or decimals. For e.g. height, weight.

  • Discrete Variable/Variate: A discrete variable can not assume value in fractions, but it will always be a round figure. For e.g The participants of the SPSS course.

Population
Aggregate of all objects or units or individuals is called as population.
Statistical population/Census
Collections of all data values on interested characteristics
Sample
It is not possible to collect data for all population units. In this situation, we collect data for only some units of population called as sample.
Sampling Unit
Each element of population is called as sampling unit.
Sampling Frame
An exhaustive list of all elements of population
Parameter
The constant which describe the population. Parameter is always single. µ is population mean.
Statistics
The constant which describe the sample. Statistics can be multiple. X-bar is sample mean.

Useful Links

Normal Distribution

Curabitur arcu erat, accumsan id imperdiet et, porttitor at sem. Mauris blandit aliquet elit, eget tincidunt nibh pulvinar a. Nulla quis lorem ut libero malesuada feugiat. Donec sollicitudin molestie malesuada. Praesent sapien massa, convallis a pellentesque nec, egestas non nisi. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec sollicitudin molestie malesuada.

Position of the Normal Curve

Curabitur arcu erat, accumsan id imperdiet et, porttitor at sem. Mauris blandit aliquet elit, eget tincidunt nibh pulvinar a. Nulla quis lorem ut libero malesuada feugiat. Donec sollicitudin molestie malesuada. Praesent sapien massa, convallis a pellentesque nec, egestas non nisi. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec sollicitudin molestie malesuada.

Shape of the Normal Curve

Curabitur arcu erat, accumsan id imperdiet et, porttitor at sem. Mauris blandit aliquet elit, eget tincidunt nibh pulvinar a. Nulla quis lorem ut libero malesuada feugiat. Donec sollicitudin molestie malesuada. Praesent sapien massa, convallis a pellentesque nec, egestas non nisi. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec sollicitudin molestie malesuada.

Z Distribution

Curabitur arcu erat, accumsan id imperdiet et, porttitor at sem. Mauris blandit aliquet elit, eget tincidunt nibh pulvinar a. Nulla quis lorem ut libero malesuada feugiat. Donec sollicitudin molestie malesuada. Praesent sapien massa, convallis a pellentesque nec, egestas non nisi. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec sollicitudin molestie malesuada.

Talk With a Cardiologist

24/7 service. Same Day Appointments are Available.

(344) 532-2352

info@divicare.com

1235 Divi St. #100, San Francisco, CA

What You Need to Know About Your Appointment

Aenean lacinia bibendum nulla sed consectetur. Maecenas faucibus mollis interdum. Nulla vitae elit libero, a pharetra augue. Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor. Curabitur blandit tempus porttitor.

N

A list of your medicines

Aenean eu leo quam. Pellentesque ornare sem lacinia quam venenatis vestibulum

N

Family Medical History

Aenean eu leo quam. Pellentesque ornare sem lacinia quam venenatis vestibulum

N

Your Medical History

Aenean eu leo quam. Pellentesque ornare sem lacinia quam venenatis vestibulum

Download Checklist
“Integer posuere erat a ante venenatis dapibus posuere velit aliquet. Cras mattis consectetur purus sit amet fermentum. Lorem ipsum dolor sit amet consectetur adipiscing elit. Duis mollis est non commodo luctus, nisi erat porttitor ligula eget lacinia odio sem nec elit. Curabitur blandit tempus porttitor”

Brett Vasquez

Patient

Better Health Care is Our Mission

24/7 service. Same Day Appointments are Available.

(344) 532-2352

info@divicare.com

1235 Divi St. #100, San Francisco, CA

Book an Appointment Today!