Quiz 4 Q 12

Quiz 4 Q 12

by Jeff Leonardo Tamburi -
Number of replies: 2

Good evening, 

Just a small question about Q12 of Quiz 4.

I get that tf.idf = tf(car,D1)*idf(car)

tf(car,D1)=7/10=0.7

idf(car)=log(3/2)=0.176

therefore the value I find is 0.123 and not 1.23 indicated as the answer. 

Am I missing something? 

Thanks!