(i) {\(x: x ∈ R, -4 < x ≤ 6\)} = [-4, 6]
(ii) {\(x: x ∈ R, -12 < x < -10\)} = (-12, -10)
(iii) {\(x: x ∈ R, 0 ≤ x < 7\)} = [0, 7]
(iv) {\(x:x ∈ R, 3 ≤ x ≤ 4\)} = [3, 4]
Find the mean and variance for the following frequency distribution.
Classes | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 |
Frequencies | 5 | 8 | 15 | 16 | 6 |
Sets are of various types depending on their features. They are as follows: