Mean of raw, frequency and grouped data 6 PYQs

• The arithmetic mean of the observations 67, 76, 97, 34, 38, 63, 95, 95 and 74 is:RRB Group D 2026 · 06 Feb 2026
• The arithmetic mean of 3, 7, 11, ..., 51 is ______.RRB NTPC 2026 · 16 Jun 2026
• The arithmetic mean of 10 observations is 6 and the sum of nine of the observations is 49. Find the tenth observation.RRB NTPC 2026 · 17 Mar 2026
• Five friends participated in a cooking contest and scored 6, 8, 7, 9, and 5 out of 10, respectively. What is the arithmetic mean of their scores?RRB NTPC 2026 · 09 May 2026
• The arithmetic mean of the observations 96, 70, 85, 52, 40, 88, 63, 40 and 60 is:RRB Group D 2025 · 11 Dec 2025
• The arithmetic mean of the observations 90, 94, 44, 97, 46, 72, 62, 44 and 54 is:RRB Group D 2025 · 12 Dec 2025

Mode and Range (and questions mixing mean, median, mode, range) 3 PYQs

• Temperatures (in °C) recorded in a city for six days : Day 1 : 32, Day 2 : 35, Day 3 : 29, Day 4 : 38, Day 5 : 33, Day 6 : 31. What is the range of…UP Police Constable 2026 · 08 Jun 2026
• The weights (in kg) of 20 students of a class have been recorded as 35, 42, 56, 44, 55, 44, 36, 44, 49, 48, 55, 35, 44, 47, 49, 48, 56, 44, 37 and…RRB 2025 · 06 May 2025
• Following are the marks obtained by 5 students in a test: 45, 67, 80, 56 and 72. What is the range of the marks?RRB NTPC 2025 · 05 Jun 2025

Empirical relation: Mode = 3 Median − 2 Mean 4 PYQs

• The mode and median of a data is 72.8 and 31, respectively. What is the mean of the data? (Use empirical formula)4245RRB Group D 2026 · 05 Feb 2026
• If the median of a data is 77.74 less than its mode, then the median of the data exceeds its mean by _____. (Use the empirical formula to find the…RRB NTPC 2026 · 18 Mar 2026
• The mode and median of a data set is 28.4 and 88, respectively. What is the mean of the data set? (Use empirical formula.)RRB NTPC 2025 · 05 Jun 2025
• The mode and median of a data set is 89.7 and 32, respectively. What is the mean of the data set? (Use empirical formula.)RRB NTPC 2025 · 06 Jun 2025

Mean deviation, variance, standard deviation and coefficient of variation 4 PYQs

• The sum of 100 observations and the sum of their squares are 400 and 2475, respectively. Later on, three observations, 3, 4 and 5, were found to be…RRB 2026 · 12 Feb 2026
• 58, 65, 42, 66, 49, 59, 44, 45, 62, 60RRB NTPC 2026 · 17 Mar 2026
• The standard deviation of 7 consecutive integers with mean 0 is _______.RRB NTPC 2026 · 22 Mar 2026
• If the standard deviation of 11, 13, 15, 17,...., 71 is m, then find the integral part of m.RRB NTPC 2026 · 25 Mar 2026

Effect of adding, subtracting or multiplying every value 1 PYQs

• If the arithmetic mean of five numbers is 20 and one number is changed from 10 to 20, what happens to the mean?RRB NTPC 2026 · 20 Jun 2026

Median of raw, frequency and grouped data 4 PYQs

• The data given below shows the marks obtained by 10 different students in an examination: 36, 91, 80, 77, 64, 80, 45, 56, 41, 96. Find the median of…SSC Selection Post 2025 · 29 Jul 2025
• If the mean of 5 observations (x + 1), (x + 3), (x + 5), (x + 7) and (x + 9) is given as 20, then find the value of the median.SSC Selection Post 2025 · 28 Jul 2025
• What is the median of the following data? 24, 30, 40, 80, 15, 57, 78, 82, 39, 97, 82RRB NTPC 2025 · 09 Sep 2025
• The median of the observations 34, 58, 98, 42, 83, 62, 12, 11, 87, 75 and 15 is:RRB NTPC 2025 · 16 Jun 2025