Example 3 - 100 plants each were planted in 100 schools - Grouped Data

  1. Chapter 14 Class 9 Statistics
  2. Serial order wise
Ask Download

Transcript

Example 3 100 plants each were planted in 100 schools during Van Mahotsava. After one month, the number of plants that survived were recorded as : 95 67 28 32 65 65 69 33 98 96 76 42 32 38 42 40 40 69 95 92 75 83 76 83 85 62 37 65 63 42 89 65 73 81 49 52 64 76 83 92 93 68 52 79 81 83 59 82 75 82 86 90 44 62 31 36 38 42 39 83 87 56 58 23 35 76 83 85 30 68 69 83 86 43 45 39 83 75 66 83 92 75 89 66 91 27 88 89 93 42 53 69 90 55 66 49 52 83 34 36 Form a grouped frequency distribution table. Find out 50% or more plants survived in how many schools? We see that Minimum = 23 & Maximum = 98 So, we take intervals as 20 – 29, 30 – 39, ….. , 90 - 99 50% or more plants survived in =

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He provides courses for Mathematics from Class 9 to 12. You can ask questions here.
Jail