Question
Which of the following scenarios best exemplifies the
use of semi-structured data in an organization?Solution
Semi-structured data, such as JSON, is a data format that organizes information without adhering to the rigid schemas of structured data. JSON allows the storage of key-value pairs, enabling flexibility while maintaining some structure for processing. In this case, the employee performance report in a JSON file captures a mix of structured data (e.g., employee IDs, performance ratings) and unstructured details (e.g., textual feedback). Organizations favor semi-structured formats for applications like web services or APIs, as these allow data to be easily shared and parsed across systems. Unlike structured data, JSON’s flexibility makes it highly suitable for evolving datasets that require some hierarchy but not the strictness of relational databases. Why Other Options Are Incorrect: • A: Customer surveys stored in spreadsheets represent structured data due to their tabular arrangement. • B: Video recordings are unstructured data as they lack inherent categorization or schema. • D: Handwritten notes qualify as unstructured data because they lack a predefined organization. • E: Relational databases are an example of structured data, adhering to defined schemas.

These seventh decile (D7) of data set 4, 3, 10, 9, 1 is
If moment generating function of discrete random variable X is (q + pet )n , then E(X2) equals to
For the variables X, Y and Z, rXY = 0.80, rXZ = 0.64, rY Z = 0.79 , then square of multiple correlation coefficient R2 X.Y Z is:
For the ANOVA table

the F - statistics is
A random sample of 100 ball bearings selected from a shipment of 2000 ball bearing has an average diameter of 0.354 inches with standard deviation 0.04...
For a normal distribution, which of the following is true?
Which one is not basis of classification of data.
For a distribution, mean is 40, median is 40.5 and mode is 41. The distribution is:
Five persons A, B, C, D and E occupy seats in a row at random. The probability that A and B sit next to each other is: