Step 3 of 7: Determine the lower class boundary for the fourth class.

Answer

To find the lower class boundary for the fourth class, follow these steps: 1. Identify the fourth class from the provided frequency table: The fourth class is '1258 - 1307'. 2. Identify the lower limit of this fourth class: The lower limit is 1258. 3. Identify the upper limit of the preceding (third) class: The third class is '1208 - 1257', so its upper limit is 1257. 4. Calculate the class boundary: Class boundaries are the midpoints between the upper limit of one class and the lower limit of the next. To find the lower boundary of the fourth class, take the average of the upper limit of the third class and the lower limit of the fourth class. Lower Class Boundary = (Upper limit of previous class + Lower limit of current class) / 2 Lower Class Boundary = (1257 + 1258) / 2 = 2515 / 2 = 1257.5 Therefore, the lower class boundary for the fourth class is 1257.5.