The following table shows the revenue generated (in 000s) for different toothpaste brands in different cities. What is the average revenue generated (in 000s) from New Delhi for all the brands?

Toothpaste	West Bengal	New Delhi	Mumbai	Bangalore
Colgate	435	580	780	550
Pepsodent	350	750	550	620
Sensodyne	280	650	380	420
Close-up	250	390	520	380

1. A

   Rs. 592.5

2. B

   Rs. 428.5

3. C

   Rs. 560.5

4. D

   Rs. 435.5

Appeared in: DSSSB - 29 August 2019 (Shift-2)

Explanation

• The question requires the calculation of the average (arithmetic mean) revenue for a specific category (New Delhi) from the given table.
• First, identify and sum the revenue values from the 'New Delhi' column: 580 + 750 + 650 + 390 = 2370.
• Next, count the number of data points, which is the number of brands (4).
• Finally, divide the total sum by the number of brands to find the average: 2370 / 4 = 592.5.
• The result, 592.5, corresponds to the average revenue in thousands of rupees.

Why Other Options Were Wrong

• Option B: This value is an incorrect calculation and does not represent the average revenue for New Delhi or any other city in the table.
• Option C: This value is an incorrect calculation. It is close to the average for Mumbai (557.5) but is not the correct average for New Delhi.
• Option D: This value is an incorrect calculation and does not represent the average revenue for New Delhi.

Related Visual

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Calculation of Arithmetic Mean from Tabular Data as background academic context rather than a clinical decision trigger.
• Although this is a general mathematics question, the underlying skill of calculating averages is crucial in nursing.
• Nurses frequently calculate averages for vital signs (e.g., mean arterial pressure), average fluid intake/output over a shift, or to understand trends in patient data.
• Accuracy in basic arithmetic is a critical patient safety competency, preventing errors in medication dosage, IV drip rates, and other clinical calculations.

How to Approach the Question

• First, carefully read the question to identify the specific task: calculate the 'average revenue'.
• Next, identify the specific data set to use: 'from New Delhi for all the brands'.
• Scan the table to locate the 'New Delhi' column and list all the values within it.
• Recall the formula for average (mean): Sum of all values divided by the number of values.
• Perform the calculation: Sum the values from the column and then divide by the count of those values (in this case, 4 brands).
• Match your final calculated result against the provided options to select the correct answer.

Concept Tested & Keywords

• Concept Tested: Calculation of Arithmetic Mean from Tabular Data
• Stem keywords: average revenue, New Delhi, table, brands
• Lead-in keywords: What is

Question ID

Q_WKis0mrSR4uHGavdA3fZ

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Reference Book

E6 NursingResearch Sukhpal Kaur p. 441-443