SAMPLE Dental Hygiene Entrance Exam Prep

Dental Hygiene Entrance Exam Preparation Study Guide

Chapter 4: Math – Part 2 4.1 Data Interpretation

Data plays a very vital role in our day to day life. When the data at hand is small, it is easy to understand, analyze and interpret in order to form substantial decisions. However, in case the data is very large, then it is generally presented in di ff erent ways, like data tables, graphs, bar charts, pie charts, scatterplots, histograms etc. In such cases, it is imperative that the user is able to understand and analyze the data precisely. The process ofunderstanding the data from its represented form is known as data interpretation. Now we shall take each of these precise forms and understand how they can be interpreted using some examples. 4.1.1 Data Tables Using data tables, data can be represented in a form oftabular representation. Tables can be single or multiple with horizontal rows and vertical columns. The data corresponding to each cell corresponds to its unique row and column. An instance ofthe data table is given as under: Sale of di ff erent models of cars (in million)

Year Hyundai

General Motors

Mercedes Honda

2012

50

76

43

67

2013

54

74

48

73

2014 57

69

55

69

In the above table, we are given the sale offour car models for three consecutive years. From this data table, we can find, analysis, and interpret the following information: Examples ● General Motors sold more models in 2012 than any other year ● The sale of Hyundai increased by 8% in 2013 as compared to 2012 ● Mercedes witnessed maximum growth of about 14.58% in 2014 as compared to previous year

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