alleryStart learning →The median of the data 8, 12, 15, 17, 21, 24, 29 (n=7) is:
- 12
- 17
- 21
- 15
Show answer and solution
Correct answer: B. 17
Data is already sorted; with n = 7, the median is the 4th value, which is 17.
DSSSB TGT Statistics — practice questions — page 2
Explore 42 free Statistics questions in DSSSB TGT Mathematics. Open each question or exercise to read its content, reference answers and available explanation.
Practise Statistics with Quill →Statistics questions and exercises with answers
Showing questions 31–42 of 42.
The median of the data 8, 12, 15, 17, 21, 24, 29 (n=7) is:Read the answer and worked solution →For grouped data, the median formula is l + [(n/2 − cf) / f] · h, where "cf" stands for:Read the answer and worked solution →If Mean = 28 and Mode = 24, estimate the Median using 3·Median = Mode + 2·Mean.Read the answer and worked solution →Two consecutive integers 11 and 13 are the central terms of an even-n sorted list. The median is:Read the answer and worked solution →A "less-than" ogive is plotted with which values on the y-axis?Read the answer and worked solution →The x-coordinate of the point where the less-than and more-than ogives intersect equals the:Read the answer and worked solution →On a less-than ogive, the median is read off by drawing a horizontal line at:Read the answer and worked solution →A cumulative frequency table's final entry equals:Read the answer and worked solution →Match each average to its meaningRead the answer and worked solution →Key in the statisticRead the answer and worked solution →Tap every measure of central tendencyRead the answer and worked solution →Which one does NOT belong?Read the answer and worked solution →
Worked practice questions
For grouped data, the median formula is l + [(n/2 − cf) / f] · h, where "cf" stands for:
- class frequency after median class
- count of frequencies
- class frequency at median
- cumulative frequency before median class
Show answer and solution
Correct answer: D. cumulative frequency before median class
cf in the formula is the cumulative frequency just before the median class.
If Mean = 28 and Mode = 24, estimate the Median using 3·Median = Mode + 2·Mean.
- 26.5
- 26.67
- 27
- 26
Show answer and solution
Correct answer: B. 26.67
3·Median = 24 + 2·28 = 80. Median = 80/3 ≈ 26.67.
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