In: Math
Finish times (to the nearest hour) for 10 dogsled teams are shown below.
Make a frequency table showing class limits, class boundaries, midpoints, frequency, relative frequencies, and cumulative frequencies. Use three classes.
(Round your answer for relative frequency to one decimal place and for midpoint to the nearest whole number.) 283 265 236 310 275 301 287 258 299 280
Step 1 : Arrange the data in ascending order.
Step 2 : Find the differenece between the maximum and minimum value
and divide by number of intervals
Max = 236
Min = 310
Class width = (310-236)/3= 25 .We shall use 30 as the to include
the last value in the interval
Hence we start with 230 and add 30 to get the first class
interval (230 to 260)
The remaining class interval are shown below.
Step 3: The class boundary, mid point calculation are shown below.
Step 4. To find the frequency, check which point fall in which
interval and count the number of observation in each
boundary.
This shown below.