Statistics Summary Essay

Statistics is commonly known as a tool utilise to direct decisions, but the official definition of statistics, harmonise to the textbook, is The science of collecting, organizing, presenting, analyzing, and interpreting data to facilitate in making more strong decisions. (Lind, Marchal, & Wathen, 2011) There argon two types of statistics, descriptive, and inferential. descriptive statistics provide selective information that domiciliate be used to show changes such as growth or decline in the area of study. Inferential statistics provide information about a specific effect of study by gathering information from samples.The science of statistics is also divided into trains, depending on certain characteristics of the information being analyzed. The archetypical take is called nominal and contains data that is just counted by category, such as the flesh of red gondolas on a car lot, or how many boys or girls are in a classroom. Another level is called ordinal. Ordinal dat a includes data that can be ranked in a certain order such as satisfactory ratings and championship rankings. The next level in statistics is called interval. Interval level not only ranks the data, but reflects a measured difference between values. An example of this could be average inches of rainfall. The final level of statistics is called proportionality. proportion level includes data that is ranked, reflects a measurable difference between values, and also assigns a meaningful value to zero. An example of ratio data could be the number of positions fill up in a company.Statistics is used for anything from estimating path/bridge traffic to determine morphological safety, to percentage of growth in universe to determine adequate classroom length in schools, to the average units of water supply used per household to establish monthly water rates. Statistics, used formally and informally, affects nearly every aspect of our lives.ReferenceLind, D. A., Marchal, W. G., & Wa then, S. A. (2011). Basic Statistics for handicraft and Economics (7th ed.). New York, NY McGraw-Hill/Irwin.