Draw the frequency polygon representing the following frequency distribution:

Explanation

Though the given frequency table is in inclusive form, yet we find that class marks in case of inclusive and exclusive forms are the same. We take the imagined classes `25-29` at the beginning and `60-64` at the end, each with frequency zero.
Thus, we have

Along the `x`-axis, we mark `27, 32, 37, 42, 47,52, 57` and `62` on a suitable scale. Along the y-axis, we mark `0, 12, 16, 20, 8, 10, 4 ` and `0` on another suitable scale. Plot the points `A(27, 0), B(32, 12), C(37, 16), D(42, 20), E(47, 8), F(52, 10), G(57, 4)` and `H(62, 0).` We draw line segments `AB, BC, CD, DE, EF, FG ` and `GH` to obtain the required frequency polygon, shown below.