For a symmetrical distributionQ1= 20 andQ3. = 40. The median of the da...
In a symmetrical distribution, the median lies exactly halfway between the first quartile (Q
1) and the third quartile (Q
3). The formula for the median in such cases is:
Given:
Q
1=20andQ
3=40
View all questions of this test
For a symmetrical distributionQ1= 20 andQ3. = 40. The median of the da...
Understanding Symmetrical Distribution
In a symmetrical distribution, the data is evenly distributed around its central point, which is the median. The key characteristics of this distribution are:
- The mean, median, and mode are all equal.
- The quartiles (Q1 and Q3) divide the data into segments.
Given Values
- Q1 (First Quartile) = 20
- Q3 (Third Quartile) = 40
In a symmetrical distribution, the median can be found using the following relationship between quartiles:
Median Calculation
- The median lies exactly halfway between Q1 and Q3 in a symmetrical distribution.
- To find the median, you can use the formula:
Median = (Q1 + Q3) / 2
Substituting the given values:
- Median = (20 + 40) / 2
- Median = 60 / 2
- Median = 30
Conclusion
Thus, the median of the data is 30, which corresponds to option 'D'. This result aligns with the principles of symmetrical distributions, confirming that the data is balanced around this central point.