Question

For a frequency distribution 7th decile is computed by the formula

• A. $D_{7} = l+ \left(\frac{\frac{n}{7} -C}{f}\right) \times c$
• B. $D_{7} = l+ \left(\frac{\frac{n}{10} -C}{f}\right) \times c$
• C. $D_{7} = l+ \left(\frac{\frac{7}{10} n -C}{f}\right) \times c$
• D. $D_{7} = l+ \left(\frac{\frac{10}{7} n -C}{f}\right) \times c$

Answer 1

Answer: (C)

$D_{7} = l+ \left(\frac{\frac{7}{10} n -C}{f}\right) \times c$

Answer 2

7th decile= $D_{7} = l+ \left(\frac{\frac{7}{10} n -C}{f}\right) \times c$