Question

coefficient of quartile deviation for a series of observation is 0.425 and the third quartile is 57. the first quartile is ?​

Answer 1

Answer:

Tree plantation is significant in the current age of climate change and global warming. Trees take in the carbon dioxide as well as many toxics and give out clean oxygen for all living things to breathe. Trees prevent the soil from getting eroded and danged during rains. They hold the soil together with its roots.

Answer 2

Step-by-step explanation:

Given coefficient of quartile deviation for a series of observation is 0.425 and the third quartile is 57. the first quartile is ?

• So we have Q3 = 57, Q1 = ? and                                                                        coefficient of quartile deviation = 0.425
•               Coefficient of quartile deviation = Q3 – Q1 / Q3 + Q1
•                                                       0.425 = 57 – Q1 / 57 + Q1
•                                          0.425 (57 + Q1) = 57 – Q1
•                                          24.225 + 0.425Q1 + Q1 = 57
•                                         24.225 + 1.425 Q1 = 57
•                                               1.425 Q1 = 32.775
•                                              Or Q1 = 32.775 / 1.425
•                                              Or Q1 = 23
• So the first quartile is 23

Reference link will be

https://brainly.in/question/9666817