The airborne speeds in miles per hour of 21 planes are shown. Find the approximate values that correspond to the given percentiles by constructing a percentile graph.   Class Frequency (f) 366 - 386 4 387 - 407 2 408 - 428 3 429 - 449 2 450–470 1 471–491 2 492–512 3 513–533 4 total 21 find the approximate value : a. 9th          d. 60th b. 20th        e. 75th c. 45th

A pediatrician wants to determine the relation that may exist between a child's height and head circumference. She randomly selects 8 children from her practice, measures their height and head circumference and obtains the data shown below.  Height          Head Circumference  27                        17.5 25                        17 26.5                     17.2 25.5                      17 27.75                    17.4 26.25                   17.4  26                         17.1 27.25                    17.4   data table n 3    0.997 4    0.950 5    0.878 6    0.811 7     0.754 8     0.707 9     0.666 10   0.632 11    0.602 12   0.576 13   0.553 14   0.532 15   0.514 16   0.497 17   0.482 18   0.468 19   0.456 20   0.444 21    0.433 22    0.423 23    0.413 24    0.404 25    0.396 26    0.388 27    0.381 28    0.374 29    0.367 30    0.361   compute the linear correlation coefficient between the height and head circumference of a child. r = ____ (round to three decimal places as…

Your assignment is to survey 10 people (friends, family, peers, etc.) and collect data for the following dependent measure:

50 part-time students were asked how many courses they were taking this term. The (incomplete) results are shown below: # of Courses Frequency Relative Frequency Cumulative Frequency 1 24 0.48   2 15     3       a.  Complete the table.b.  What percent of students take exactly one course? %

Consider the following data set: 38 24 32 18 25 Find the 36th percentile for this data. 36th percentile =