### StatisticsStatistics

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 Editor Ramacharyulu, N.Ch.Pattabhi Illustrator Soni, Prashanth Source SCERT Andhra Pradesh Content type Text Publisher Government of Andhra Pradesh File Format PDF Copyright Year ©2013 Language English Difficulty Level Medium
 Subject Domain (in DDC) Natural sciences & mathematics ♦ Mathematics ♦ Probabilities & applied mathematics Subject Keyword Ungrouped ♦ Distribution ♦ Frequency Distribution ♦ Weighted Observations ♦ Central Tendency ♦ Mean ♦ Median ♦ Mode Table of Contents Chapter 9) Statistics  9.1) Introduction  9.2) Collection of Data  9.3) Presentation of Data9.4) Measures of Central Tendency9.4.1) Mean  9.4.1.1) Mean of Raw Data  9.4.1.2) Mean of Ungrouped frequency distribution  9.4.1.3) Mean of Ungrouped Frequency Distribution by Deviation Method9.4.2) Median  9.4.2.1) Median of a Frequency Distribution  9.4.3) Mode  9.5) Deviation in Values of Central Tendency Description This is the ninth chapter namely “Statistics” of book entitled “Mathematics: class 9”. This chapter deals with Statistics. Representation of the data with actual observations with frequencies in a table is called ‘Ungrouped Frequency Distribution Table’ or ‘Table of Weighted Observations. Representation of a large data in the form of a frequency distribution table enables us to view the data at a glance, to find the range easily, to find which observation is repeating for how many times, to analyse and to interpret the data easily. Statistics is the study of the collection, analysis, interpretation, presentation, and organization of data. In applying statistics to, e.g., a scientific, industrial, or social problem, it is conventional to begin with a statistical population or a statistical model process to be studied. Statistics deals with all aspects of data including the planning of data collection in terms of the design of surveys and experiments. This chapter includes types of measure of central tendency : Mean, Mode, Median and some examples with solution related to the chapter. Educational Role Student ♦ Teacher Age Range 13 to 17 years Educational Use Classroom ♦ Reading Interactivity Type Expositive Education Level IX and X Learning Resource Type Book Educational Framework Andhra Pradesh Board of Secondary Education (APBSE) Time Required P1W2D Publisher Date 2013 Publisher Place Hyderabad Size (in Bytes) 298.92 kB Page Count 20