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SNAP Averages and Mixtures — practice questions

Explore 30 free Averages and Mixtures questions in SNAP Quantitative Aptitude. Open each question or exercise to read its content, reference answers and available explanation.

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Averages and Mixtures questions and exercises with answers

Showing questions 1–30 of 30.

The mean of observations is the sum of all values divided by:Read the answer and worked solution →The Greek letter used to write summation in short form is:Read the answer and worked solution →The exact mean of the 30 students' maths marks was:Read the answer and worked solution →Students who scored exactly 40 marks go into which class interval?Read the answer and worked solution →The class mark of a class interval is the:Read the answer and worked solution →For the class 10-25, the class mark is:Read the answer and worked solution →Using class marks with frequencies to compute the mean is the:Read the answer and worked solution →The grouped mean came to 62 while the exact mean was 59.3 because of the:Read the answer and worked solution →In the assumed mean method, d equals:Read the answer and worked solution →The mean obtained by direct, assumed mean and step-deviation methods is:Read the answer and worked solution →The mean percentage of female teachers in rural primary schools came to:Read the answer and worked solution →The mean number of wickets taken by the 45 bowlers was:Read the answer and worked solution →The value that occurs most often in the data is the:Read the answer and worked solution →Data with more than one value sharing the maximum frequency is:Read the answer and worked solution →In grouped data, the class with the maximum frequency is the:Read the answer and worked solution →For the household survey with modal class 3-5, the mode came to:Read the answer and worked solution →Among the 30 students, mode marks were 52 while mean marks were 62, so the mode was:Read the answer and worked solution →The middle-most observation in ordered data is the:Read the answer and worked solution →With 100 students, the median is the average of which two observations?Read the answer and worked solution →The class whose cumulative frequency is greater than and nearest to n/2 is the:Read the answer and worked solution →For the 53 students, the median marks came to about:Read the answer and worked solution →The empirical relation between the three measures is 3 Median equals:Read the answer and worked solution →Catch the mean methodsRead the answer and worked solution →Pop the central tendency wordsRead the answer and worked solution →Run the statistics numbersRead the answer and worked solution →Slice the statistics wordsRead the answer and worked solution →Mean or medianRead the answer and worked solution →Sort mean, median and modeRead the answer and worked solution →Type the numberRead the answer and worked solution →Averages bingoRead the answer and worked solution →

Worked practice questions

The mean of observations is the sum of all values divided by:

  1. The number of observations
  2. The largest observation
  3. The class interval size
  4. The range of the data
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Correct answer: A. The number of observations

1. Add every value. 2. Divide by how many there are. 3. That is the mean or average. _Source: syllabus Mathematics, Chapter 14, Statistics._

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The Greek letter used to write summation in short form is:

  1. Omega
  2. Sigma
  3. Delta
  4. Theta
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Correct answer: B. Sigma

1. Capital sigma means summation. 2. It shortens sum of f times x. 3. The mean is sigma fx over sigma f. _Source: syllabus Mathematics, Chapter 14, Statistics._

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The exact mean of the 30 students' maths marks was:

  1. 59.3
  2. 62.0
  3. 52.0
  4. 47.5
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Correct answer: A. 59.3

1. Multiply each mark by its frequency and add. 2. Divide by 30. 3. The mean is 59.3. _Source: syllabus Mathematics, Chapter 14, Statistics._

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