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BCA Data Science Understanding Data — practice questions

Explore 32 free Understanding Data questions in BCA Data Science Datascience. Open each question or exercise to read its content, reference answers and available explanation.

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Understanding Data questions and exercises with answers

Showing questions 1–30 of 32.

The singular form of the word data is:Read the answer and worked solution →Data organised in a well defined format is called:Read the answer and worked solution →Data not in the traditional row and column structure is called:Read the answer and worked solution →The middle value of a sorted list is called the:Read the answer and worked solution →The value appearing the most number of times in data is the:Read the answer and worked solution →Government data collected about a population comes from a process called:Read the answer and worked solution →Data already in digital form may be supplied in a file of which type?Read the answer and worked solution →Storing data on storage devices so it can be retrieved later is called:Read the answer and worked solution →How many common measures of central tendency are named?Read the answer and worked solution →A single value that gives some idea about the data is a measure of:Read the answer and worked solution →An exceptionally large or small value compared to the rest is called an:Read the answer and worked solution →Which measure is not a suitable choice when outliers are present?Read the answer and worked solution →If a list has an even number of values, the median is the average of:Read the answer and worked solution →What is the first step in computing the median?Read the answer and worked solution →When does a data set have no mode at all?Read the answer and worked solution →Unstructured data is sometimes described using other data called:Read the answer and worked solution →Mode can be found for numeric data and also for data that is:Read the answer and worked solution →When can a data set have multiple modes?Read the answer and worked solution →Measures indicating the degree of diversity in a data set are measures of:Read the answer and worked solution →The two common measures of dispersion are range and:Read the answer and worked solution →Why does an outlier badly influence the range?Read the answer and worked solution →Two data sets can share the same mean and median but differ completely in:Read the answer and worked solution →Why is data stored in electronic form rather than processed manually?Read the answer and worked solution →Large volumes of processed data can reveal hidden traits not visible to:Read the answer and worked solution →Structured or unstructuredRead the answer and worked solution →Match the statistical termRead the answer and worked solution →Order the median calculationRead the answer and worked solution →Central tendency or dispersionRead the answer and worked solution →True or false about dataRead the answer and worked solution →Count the measuresRead the answer and worked solution →

Worked practice questions

The singular form of the word data is:

  1. Datum
  2. Datom
  3. Dater
  4. Datel
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Correct answer: A. Datum

1. The word data is itself a plural form. 2. A single item therefore has its own word. 3. Data is plural and the singular of the word data is datum. 4. So the answer is datum. _Source: syllabus Computer Science, Ch 7 'Understanding Data'_

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Data organised in a well defined format is called:

  1. Sequenced data
  2. Structured data
  3. Sculptured data
  4. Scattered data
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Correct answer: B. Structured data

1. Data arrives in very different shapes. 2. One kind fits neatly into rows and columns. 3. Data which is organised and can be recorded in a well defined format is structured data. 4. So the answer is structured data. _Source: syllabus Computer Science, Ch 7 'Understanding Data'_

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Data not in the traditional row and column structure is called:

  1. Unaccounted data
  2. Unrestricted data
  3. Unstructured data
  4. Uncalculated data
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Correct answer: C. Unstructured data

1. Web pages and videos do not fit a table. 2. Data of that kind is named by what it lacks. 3. Data which is not in the traditional row and column structure is unstructured data. 4. So the answer is unstructured data. _Source: syllabus Computer Science, Ch 7 'Understanding Data'_

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