Question

1. Here are the driving scores of 40 new drivers. Make a relative frequency table for their scores:

Answer 1

From the question we are told that:

Sample size $n=40$

Generally Number of class (K) is Mathematically given as

$2^k \geq 40$

Therefore

$2^k \geq 2^6$

$k=6$

Generally with class interval of k

Class Width is  mathematically given as

$W=\frac{highest\ score-lowest\ score}{k}$

$W=\frac{97-42}{6}$

$W=10$

The complete Table is attached below

2)

The complete Image of the Histogram is attached below