Statistics

Statistics

Collecting-

Organizing-

Presenting- charts and pie charts.

Analyzing- calculate, means and mode, we will do next time we “meet”

Interpreting- do your conclusions, you have to apply to your assignment

First|Slide- Student grades for exam.

Collecting information, Rebbeca-female-6.8

Joe M 75.

Organized “highest to lowest”

Presenting Data. Males 0.500 at least “half of the data” 50 percent average grade is 6.0

Females is 6.4

How to get average or “mean” if 5 numbers for example, add all 5 numbers, and then divide by 5

Definitions of “MEAN MEDIAN AND MODE”

Types of Statisitics. Example: the average age of Qataris living in Ain Khalid, average length of books about statistics.

Inferntial-

Population vs Sample

Population Allmembers of a group from which you want to draw a conclusion

-for example, all residents aged 45 and over, all male patients treated at Al Wakra Hospital in 2013.

Sample-------- the part of the population selected for analysis, for example residents aged 45 and over living in West bay; male patients involved in road accidents treated at Al Wakra in 2013 etc…

Variables- A characteristic of an item or individual that will be analyzed using statistics. For example : Gender. Age, household income of residents living in a specific geographic area

Ethnicity.

Categotical variables : these variables are selected from an establuished list of categories. Example : categories “male and “female”

University program ibms etc.

Parameter: a numerical

Presentation of categorical data

Summary tables/charts

Helps you to see big picture

Ideal to present one or two variable (e.g. Gender)

For summary tables

Example “””””” Nokia sony Samsung Lg others….

Number sold column on left, percentage on right…. (106----27.7)

Nokia has largest market share – 27.7%

4 brands account for 59.2% of mobile phone market

“Oligarchy”|

Pie charts, and graphs… What is wrong with this chart?

No information, different sections, we don’t know what...