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Question

Study the given table carefully and answer the questions that follow

The following table has semester fees for four different courses in 5 different years

YearsBCAMCAMTechMPhil
201625000520006020030000
201726500535006140032000
201827200542006250032600
201927600557006290033400
202028000568006370033900

Find out the average of difference of fees of MCA and MTech for 2016‐2020.

The correct answer is

7700

Understanding the Fees Table Data

The question asks us to find the average of the difference in fees between the MCA and MTech courses over five years, from 2016 to 2020. To do this, we first need to extract the relevant fee data for MCA and MTech for each of these years from the provided table.

Year MCA Fees MTech Fees
2016 52000 60200
2017 53500 61400
2018 54200 62500
2019 55700 62900
2020 56800 63700

Calculating the Difference in Fees Year by Year

Next, we calculate the difference between the MTech fees and the MCA fees for each year. The difference is MTech Fee − MCA Fee.

  • For 2016: Difference = \(60200 - 52000 = 8200\)
  • For 2017: Difference = \(61400 - 53500 = 7900\)
  • For 2018: Difference = \(62500 - 54200 = 8300\)
  • For 2019: Difference = \(62900 - 55700 = 7200\)
  • For 2020: Difference = \(63700 - 56800 = 6900\)

We can also present these differences in a table:

Year Difference (MTech - MCA)
2016 8200
2017 7900
2018 8300
2019 7200
2020 6900

Calculating the Average Difference of Fees

To find the average difference, we sum up the differences calculated for each year and divide the total sum by the number of years, which is 5 (from 2016 to 2020).

Sum of differences = \(8200 + 7900 + 8300 + 7200 + 6900\)

Sum of differences = \(38500\)

Average difference = \(\frac{\text{Sum of differences}}{\text{Number of years}}\)

Average difference = \(\frac{38500}{5}\)

Let's calculate the average:

\(38500 \div 5\)

\(38500 / 5 = 7700\)

The average difference of fees between MCA and MTech for the years 2016-2020 is 7700.

Final Answer

The average of the difference of fees of MCA and MTech for the years 2016-2020 is 7700.

Revision Table: MCA and MTech Fees Analysis

Concept Description Calculation Steps
Difference Finding the numerical difference between two values (MTech Fee minus MCA Fee). Subtract the smaller value from the larger value (or as specified, e.g., MTech - MCA) for each period.
Sum Adding up a series of values. Add all the yearly differences together.
Average Finding the mean value of a set of numbers. Divide the sum of the values by the count of values (total difference sum by 5 years).

Additional Information: Data Analysis and Averages

Analyzing data presented in tables is a common type of quantitative reasoning question. Understanding how to calculate differences and averages is fundamental.

  • Data Extraction: Always carefully read the question to identify which specific data points from the table are needed.
  • Difference: The difference between two numbers \(a\) and \(b\) is typically \(|a - b|\) or \(a - b\) depending on the context. Here, MTech fees are higher, so MTech - MCA gives positive differences.
  • Average (Mean): The average or arithmetic mean of a set of numbers is calculated by summing all the numbers and dividing by the count of numbers. The formula is \(\text{Average} = \frac{\text{Sum of values}}{\text{Number of values}}\). This gives a single value that represents the central tendency of the data set.
  • Applications: Calculating averages and differences is useful in many areas, such as tracking financial performance, comparing prices, analyzing trends, and understanding variations in data sets.
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Important Questions from Tabulation

  1. The table shows District-wise data of a number of primary school teachers posted in schools of a city.

    Study the table and answer the question:

    District

    Male teachers

    Female teachers

    East

    1650

    2375

    North

    1075

    2651

    West

    1280

    1520

    South

    1170

    1085

    Central

    690

    859


    What is the difference between the total number of male teachers in the districts East, North, West taken together and the total number of female teachers in the districts East and South?
  2. Table shows income (in Rs. ) received by 4 employees of a company during the month of December 2020 and all their income sources.

    Source

    Amit

    Suresh

    Nitin

    Varun

    Salary

    35000

    38500

    29000

    42000

    Arrears

    6000

    6300

    5000

    7500

    Bonus

    1000

    1100

    1000

    1240

    Overtime

    1800

    1950

    1400

    1500


    What is the ratio of salary of Varun to his income other than salary?
  3. Study the table and answer the question:

    Income (Rs.)

    No. of persons

    Less than 200

    12

    Less than 250

    26

    Less than 300

    34

    Less than 350

    40

    Less than 400

    50


    What is the percentage of persons earning Rs. 250 or more?
  4. The following table shows the annual profit of a company (in Rs. lakh).

    2014-2015

    2015-2016

    2016-0217

    2017-2018

    2018-2019

    625

    690

    725

    775

    815

    The period which has the maximum percentage increase in profit over the previous year is:

  5. The table given below shows the number of persons participating in a survey from 6 different states.

    States Persons 
    S1100
    S2200 
    S3400 
    S4500 
    S5600 
    S6800

    What is the ratio of number of person participating in a survey from state S3 to the number of person participating in a survey from state S4?

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