Definition Of Data

Data can be defined as a collection of facts or information from which conclusions may be drawn.

Example of Data

The data shown below are Mark's scores on five Math tests conducted in 10 weeks.
45, 23, 67, 82, 71
The data helps us compare his scores and learn his progress.

Video Examples: Data Analysis Problem 1 REVISED GRE MATH REVIEW OFFICIAL GUIDE
 

Solved Example on Data

Ques: Number of baskets scored by a basketball player are: 8, 15, 11, 13, 9, 12, and 10. Find the range of the data. 

Choices:

A. 5
B. 17
C. 7
D. 6
Correct Answer: C

Solution:

• Step 1: Highest score = 15
  Step 2: lowest score = 8
  Step 3: Range = 15 - 8 = 7. [Range = highest score - lowest score.]

Real-world Connections for Data

Collection of data is an important thing in statistical data analysis. Data can be collected from sources or through observation, surveys, or by doing experiments. All of us know about censuses. Through censuses a detailed information about the population of a country can be made available.

Related Worksheet

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