CA Foundation · Quantitative Aptitude · Statistical Description of Data
Which one of the following variables is a discrete quantitative variable?
The number of defective bulbs in a box of 100 is a discrete variable because it is obtained by counting and takes only whole values such as 0, 1, 2. Weight, processing time and rainfall are measured quantities that can take any value in an interval, so they are continuous.
- AWeight of a parcel dispatched by a courier firm in kg
- BNumber of defective bulbs found in a box of 100 bulbsCorrect
- CTime taken by a clerk to process a loan file
- DDaily rainfall recorded at a Mumbai weather station
Explanation
The number of defective bulbs can only be 0, 1, 2, ... 100 and is obtained by counting, so it is discrete. Weight, time and rainfall are measured and can take any value within a range, so they are continuous variables.
Did you get it right without looking?
One question tells you little. A timed set on Statistical Description of Data shows your real accuracy, how long you take and where you lose marks.
More Statistical Description of Data questions
- A market researcher in Kochi records each respondent's response to the question 'How satisfied are you with the delivery service?' using the…
- For 60 delivery trips of a Bengaluru courier firm, the 'less than' cumulative frequencies of delivery time (in minutes) are: less than 20: 6…
- A bank in Nagpur wants to study the spending habits of its credit-card customers. It decides to use the records already compiled and publish…
- The marks of 40 students are grouped into classes 0–10, 10–20, 20–30, 30–40 with frequencies 6, 10, 14 and 10 respectively. What is the 'les…
- A researcher in Jaipur wants data on the monthly household expenditure of families in a city. She uses the Census of India's published table…
- For a continuous frequency distribution with classes 20–30, 30–40, 40–50, 50–60, the frequencies are 6, 14, 18 and 12. What is the relative …