Mathematics ยท Quantitative Aptitude

Statistics and Dispersion

559 Questions

Statistics and dispersion involve the calculation of mean, standard deviation, variance, and coefficient of variation for data sets. These questions also cover probability distributions and cumulative frequency analysis. Such quantitative aptitude topics are heavily featured in banking and SSC examinations.

Standard deviationNormal distributionMean calculationCumulative frequencyCoefficient of variation

Statistics and Dispersion Questions

Multiple choice

In a data set {1, 2, 3, 4, 5}, what is the median?

  1. 2

  2. 3

  3. 4

  4. 5
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Median is the middle value of a dataset when assorted in numerical order. In this case, the values can be assorted as {1, 2, 3, 4, 5} and the middle value is 3.

Multiple choice

In a data set {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, what is the mean?

  1. 5

  2. 5.5

  3. 6

  4. 6.5
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mean is the sum of all values divided by the number of values in a dataset. In this case, (1+2+3+4+5+6+7+8+9+10) / 10 = 55 / 10 = 5.5.

Multiple choice

In a data set {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, what is the median?

  1. 5

  2. 5.5

  3. 6

  4. 6.5
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Median is the middle value of a dataset when assorted in numerical order. In this case, the values can be assorted as {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} and the middle value is 5.5.

Multiple choice

What is the purpose of using Numerical Integration in Computational Statistics?

  1. To approximate the value of an integral

  2. To solve differential equations

  3. To optimize a function

  4. To generate random numbers
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Numerical Integration is used in Computational Statistics to approximate the value of an integral, which is a mathematical operation that finds the area under a curve.