How do you find Q1 and Q3 from a frequency table?
Q1 is the median (the middle) of the lower half of the data, and Q3 is the median (the middle) of the upper half of the data. (3, 5, 7, 8, 9), | (11, 15, 16, 20, 21). Q1 = 7 and Q3 = 16.
How do you find quartile 3?
Quartiles are the values that divide a list of numbers into quarters: Put the list of numbers in order. Then cut the list into four equal parts….In this case all the quartiles are between numbers:
- Quartile 1 (Q1) = (4+4)/2 = 4.
- Quartile 2 (Q2) = (10+11)/2 = 10.5.
- Quartile 3 (Q3) = (14+16)/2 = 15.
How do you find the third quartile?
The third Quartile of the 75th Percentile (Q3) is given as: Third Quartile(Q3)=(3(n+1)/4)th Term also known as the upper quartile. The interquartile range is calculated as: Upper Quartile – Lower Quartile.
What is the quartile 3?
The upper or third quartile, denoted as Q3, is the central point that lies between the median and the highest number of the distribution.
How to calculate third quartile for grouped data?
The third quartile Q3 can be computed as follows: Q3 = l + (3 (N) 4 − F < f) × h = 18.5 + (3 ∗ 56 4 − 30 24) × 3 = 18.5 + (42 − 30 24) × 3 = 18.5 + (0.5) × 3 = 18.5 + 1.5 = 20 minutes Thus, 75 % of the students spent less than or equal to 20 minutes on the internet.
Which is the quartile of the arranged data?
Quartiles are the values of arranged data which divide whole data into four equal parts. They are 3 in numbers namely Q 1, Q 2 and Q 3. Here Q 1 is first quartile, Q 2 is second quartile and Q 3 is third quartile. For discrete frequency distribution, i t h quartile formula for grouped data is
How to calculate quartiles for discrete frequency distribution?
Quartile formula for grouped data For discrete frequency distribution, the formula for ith quartile is Qi = (i(N) 4)th value, i = 1, 2, 3
Which is the 3 R D quartile of the Internet?
Thus, 50 % of the students spent less than or equal to 18.1 minutes on the internet. The cumulative frequency just greater than or equal to 42 is 54. The corresponding class 18.5 − 21.5 is the 3 r d quartile class.