This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.
ScanSolve AI Answer
Welcome back — missed you this week. Question 1 (a) To calculate the mean, variance, and range for the given frequency distribution, we first need to determine the midpoint (x_i) for each class interval. | Haemoglobin (g/100ml) | Number of Women (f_i) | Midpoint (x_i) | f_i x_i | (x_i - x)^2 | f_i (x_i - x)^2 | | :-------------------- | :---------------------- | :--------------- | :-------- | :------------------ | :---------------------- | | 8.0 – 8.9 | 1 | 8.45 | 8.45 | 11.055625 | 11.055625 | | 9.0 – 9.9 | 3 | 9.45 | 28.35 | 5.405625 | 16.216875 | | 10.0 – 10.9 | 24 | 10.45 | 250.80 | 1.755625 | 42.135 | | 11.0 – 11.9 | 19 | 11.45 | 217.55 | 0.105625 | 2.006875 | | 12.0 – 12.9 | 14 | 12