Chapter Study

BCA Semester 3 – Probability and Statistics – Unit 2: Descriptive Statistics (6Hrs)

Comprehensive questions and detailed answers for Unit 2: Descriptive Statistics (6Hrs). Perfect for exam preparation and concept clarity.

Questions

Marks

Determine average wages from the following data:

\begin{array}{|c|c|c|c|c|c|c|c|c|c|} \hline \text{Wages} & 25\text{-}30 & 30\text{-}35 & 35\text{-}40 & 40\text{-}45 & 45\text{-}50 & 50\text{-}55 & 55\text{-}60 & 60\text{-}65 & 65\text{-}70 \\ \hline \text{No. of workers} & 10 & 13 & 18 & 21 & 24 & 28 & 20 & 11 & 8 \\ \hline \end{array}

MediumTHEORY5 marks2019(TU FOHSS Final)

The labor productivity indexes of Nepal are recorded below:

\begin{array}{|c|c|c|c|} \hline \text{Sector} & 2015 & 2016 & 2017 \\ \hline \text{Agriculture} & 100 & 125 & 138 \\ \text{Manufacturing} & 100 & 60 & 53 \\ \text{Community and Social Service} & 100 & 89 & 80 \\ \hline \end{array}

Question: Does the labor productivity index vary due to:

\text{i) Difference in the sector \\ \quad ii) Difference in the time period}

MediumTHEORY10 marks2019(TU FOHSS Final)

Determine First Quartile $(Q_1)$ , 7th Decile $(D_7)$ , and 80th Percentile $(P_{80})$ from the following data:

\begin{array}{|c|c|c|c|c|c|c|c|c|} \hline \text{Age in years} & 10 & 12 & 14 & 16 & 18 & 20 & 22 & 24 & 26 \\ \hline \text{No. of people} & 2 & 11 & 24 & 35 & 27 & 17 & 11 & 8 & 5 \\ \hline \end{array}

MediumTHEORY5 marks2020(TU FOHSS Final)

Calculate the median and mode from the following distribution:

\begin{array}{|c|c|c|c|c|c|c|} \hline \text{Expenditure (000 Rs)} & 10\text{-}20 & 20\text{-}30 & 30\text{-}40 & 40\text{-}50 & 50\text{-}60 & 60\text{-}70 \\ \hline \text{Number of families} & 7 & 12 & 15 & 13 & 8 & 5 \\ \hline \end{array}

MediumTHEORY5 marks2020(TU FOHSS Final)

From the following data, determine the average marks of students, standard deviation, and coefficient of variation:

\begin{array}{|c|c|c|c|c|c|c|c|c|c|} \hline \text{Marks} & 0\text{-}10 & 10\text{-}20 & 20\text{-}30 & 30\text{-}40 & 40\text{-}50 & 50\text{-}60 & 60\text{-}70 & 70\text{-}80 & 80\text{-}90 \\ \hline \text{No. of people} & 54 & 90 & 86 & 58 & 62 & 82 & 78 & 66 & 70 \\ \hline \end{array}

MediumTHEORY10 marks2020(TU FOHSS Final)

The following table shows the monthly salary of employees in a certain locality of Lalitpur Sub‑metropolitan City:

\begin{array}{|c|c|c|c|c|c|c|c|} \hline \text{Salary (000)} & 0\!-\!10 & 10\!-\!20 & 20\!-\!30 & 30\!-\!40 & 40\!-\!50 & 50\!-\!60 & 60\!-\!70 \\ \hline \text{No.\ of employees} & 15 & 22 & 28 & 35 & 24 & 20 & 16 \\ \hline \end{array}

MediumTHEORY5 marks2021(TU FOHSS Final)

Determine First Quartile $Q_1), D_7$ and $p_80 (80th \text{percentile}$ from the following data:

\begin{array}{|c|c|c|c|c|c|c|c|} \hline \text{Age in years} & 10\!-\!20 & 20\!-\!30 & 30\!-\!40 & 40\!-\!50 & 50\!-\!60 & 60\!-\!70 & 70\!-\!80 & 80\!-\!90 \\ \hline \text{No.\ of peoples} & 10 & 11 & 27 & 35 & 29 & 17 & 11 & 10 \\ \hline \end{array}

MediumTHEORY5 marks2021(TU FOHSS Final)

The following data represents the scores made in an intelligence test by the groups of students from section A and section B of National College:

\begin{array}{|c|c|c|c|c|c|c|c|c|c|c|} \hline \text{Student no.} & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 \\ \hline \text{Section A} & 9 & 8 & 10 & 6 & 7 & 6 & 7 & 8 & 9 & 10 \\ \hline \text{Section B} & 10 & 8 & 6 & 8 & 9 & 8 & 7 & 8 & 5 & 8 \\ \hline \end{array}

Test which group is more consistent to make scores in the intelligence test on the basis of coefficient of variation.

MediumTHEORY10 marks2021(TU FOHSS Final)

Showing 8 questions

Sample Questions

Marks: 5Chapter: Unit 2: Descriptive Statistics (6Hrs)

Marks: 10Chapter: Unit 2: Descriptive Statistics (6Hrs)

Marks: 5Chapter: Unit 2: Descriptive Statistics (6Hrs)

Marks: 5Chapter: Unit 2: Descriptive Statistics (6Hrs)

Marks: 10Chapter: Unit 2: Descriptive Statistics (6Hrs)

And more questions available on this page.