Statistics
80 CDS Mathematics previous year questions (PYQs) from 18 papers, 2016 to 2026, with answers and worked solutions.
About this chapter
- Difficulty: 31 easy · 43 moderate · 6 hard.
- Most-asked subtopics: Mean, Median and Mode of Grouped Data (19), Frequency Tables and Cumulative Frequency (15), Median of Ungrouped Data (15).
- Updated 20 September 2026.
#1Data, Scales and Presentation
#2Data, Scales and Presentation
#3Data, Scales and Presentation
#4Data, Scales and Presentation
#5Data, Scales and Presentation
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#6Data, Scales and Presentation
#7Data, Scales and Presentation
#8Data, Scales and Presentation
#9Data, Scales and Presentation
#10Data, Scales and Presentation
#11Data, Scales and Presentation
#12Frequency Tables and Cumulative Frequency
#13Frequency Tables and Cumulative Frequency
#14Frequency Tables and Cumulative Frequency
#15Frequency Tables and Cumulative Frequency
- Set · 3 questionsConsider the following for the next three (03) items that follow : A frequency distribution table is given below :Total frequency is 200 and mean of the distribution is 1.46.
x 0 1 2 3 4 5 f 46 p q 25 10 5 #16Frequency Tables and Cumulative Frequency
#17Frequency Tables and Cumulative Frequency
#18Frequency Tables and Cumulative Frequency
- Set · 5 questionsConsider the following for the next five (05) items that follow : The frequency distribution of 205 observations on X is given below :
X 3 5 6 7 Frequency f f + 2 f - 3 f + 6 #19Frequency Tables and Cumulative Frequency
#20Frequency Tables and Cumulative Frequency
#21Frequency Tables and Cumulative Frequency
#22Frequency Tables and Cumulative Frequency
#23Frequency Tables and Cumulative Frequency
- Set · 2 questionsConsider the following for the next two (02) items that follow : The frequency distribution of marks obtained by students in an English examination is given below :
Marks obtained Number of Students Below 40 50 Below 50 125 Below 60 210 Below 70 315 Below 80 350 #24Frequency Tables and Cumulative Frequency
#25Frequency Tables and Cumulative Frequency
#26Frequency Tables and Cumulative Frequency
#27Properties of the Arithmetic Mean
#28Properties of the Arithmetic Mean
#29Properties of the Arithmetic Mean
#30Properties of the Arithmetic Mean
#31Properties of the Arithmetic Mean
#32Properties of the Arithmetic Mean
#33Properties of the Arithmetic Mean
#34Properties of the Arithmetic Mean
#35Properties of the Arithmetic Mean
#36Properties of the Arithmetic Mean
#37Properties of the Arithmetic Mean
#38Properties of the Arithmetic Mean
#39Median of Ungrouped Data
#40Median of Ungrouped Data
#41Median of Ungrouped Data
#42Median of Ungrouped Data
#43Median of Ungrouped Data
#44Median of Ungrouped Data
#45Median of Ungrouped Data
#46Median of Ungrouped Data
#47Median of Ungrouped Data
#48Median of Ungrouped Data
#49Median of Ungrouped Data
#50Median of Ungrouped Data
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