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Question

The table below gives details of coal production in four different states for the years $2014$ to $2018$. Observe the table and answer the question below.
State$2014$$2015$$2016$$2017$$2018$
A$84$$86$$85$$82$$85$
B$168$$164$$162$$163$$145$
C$178$$180$$181$$182$$185$
D$86$$79$$84$$76$$74$
Coal production (in thousands)

Which State shows the lowest range in the data for production of coal in the given period?

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
State A

Understanding Coal Production Range

The question asks to identify the state with the minimum variation in coal production over a specific period. This variation is measured by the 'range', which is the difference between the maximum and minimum values observed.

Calculating Production Range for States

To find the state with the lowest range, follow these steps:

  • For each state (State A, State B, State C, State D), determine the maximum production value of coal during the given period.
  • Similarly, identify the minimum production value of coal for each state over the same period.
  • Calculate the range for each state using the formula:

    Range = Maximum Production - Minimum Production

  • Represent this calculation using LaTeX notation for State X:

    Range$_X = P_{max, X} - P_{min, X}

    where $P_{max, X}$ is the maximum production and $P_{min, X}$ is the minimum production for State X.

Identifying Lowest Production Range

After calculating the range for all the states, compare these values. The state that records the smallest difference between its maximum and minimum coal production figures exhibits the lowest range.

Based on the analysis of coal production data for the given period, State A shows the lowest range.

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Similar Questions

  1. In how many years did the overall production of coal fall when compared to the previous year?
  2. In which year has State C registered the highest percentage contribution to the total coal production for the year?
  3. For which State has the percentage contribution to the overall coal production NOT dropped even once during the $5\text{-year}$ period? (Percentage calculation rounded off to the nearest integer).
  4. In which state was the annual rainfall (in cm) for 2005 greater than the average annual rainfall (in cm) for all three years?
  5. Which state has the maximum percentage decrease in annual rainfall between the years 2000 and 2015?
  6. Which state has maximum percentage change in the production of grains between the year 2015 and 2018?
  7. The following table shows the number of misprints in various pages of a book.

    Number of misprints (per page)012345
    Number of pages1549536762


    What is the total number of pages in the book and approximately what percentage of them are erroneous?
  8. In which year did the production fall the most as compared to the previous year, in offshore production?
  9. What is the approximate percentage decline in offshore production in the year 2013-14?
  10. What is the total onshore production during all the years (in BCM)?

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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