Arithmetic

Central Tendency

Easy

Match the LIST-I with LIST-II

LIST-I (Measure of Dispersion) LIST-II (Property of the Measure of Dispersion)
A. Range I. Based on absolute deviation from mean or median
B. Variance II. Based on squared deviation from mean
C. Standard Deviation III. Square of standard deviation
D. Mean Deviation IV. Difference between largest and smallest values

Choose the correct answer from the options given below:

LIST-I (Measure of Dispersion)	LIST-II (Property of the Measure of Dispersion)
A. Range	I. Based on absolute deviation from mean or median
B. Variance	II. Based on squared deviation from mean
C. Standard Deviation	III. Square of standard deviation
D. Mean Deviation	IV. Difference between largest and smallest values

A-I, B-II, C-III, D-IV

A-I, B-II, C-IV, D-III

A-IV, B-III, C-I, D-II

A-IV, B-III, C-II, D-I

✅ Correct Option: 4

Range is simply the largest value minus the smallest (IV). Variance is defined as the square of the standard deviation (III). Standard deviation is the root of the mean squared deviation from the mean (II). Mean deviation uses absolute deviations from the mean or median (I).

2023: 1 June Shift 1

Eight persons with an average weight of 49 kg were in a lift. Two more persons Anita and Kamal boarded the lift and the average weight of the persons in the lift increased by 2.8 kg. What is the average weight of Anita and Kamal?

2023: 7 June Shift 1

Find the median of the following data :

42, 19, 46, 17, 8, 35, 26, 39, 29

2026: 25 May Shift 2

The median of numbers 14, 7, 18, 21 and 27 is:

2025: 13 May Shift 2

The average of $39$ numbers is $17$ . Each number is multiplied by $12$ and then $16$ is added to each number. Finally, each number thus formed is divided by $11$ .

Determine the average of the new sets of numbers thus formed ?

2023: 24 May Shift 3

The mean of scores obtained by 50 students is found to be 79.5. Later on, it was found that the score of one student was read as 94 in place of 49 and the score of another student was read as 69 in place of 89. Find the correct mean.

2025: 21 May Shift 1

The mean of 6 numbers is 19. If two more numbers are included, the mean of the 8 numbers becomes 23. What is the sum of the two included numbers?

Solution

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