Big Data Analytics

Discovery • 361

Wal-Mart nearest us. We detect 67 portable and 54 nonportable models,

regardless of whether they can be picked up.

What this means is that there are 67 models that are portable that use

either gas or charcoal. Among these models, some will be available in the

store and some will not. A large grill is dicult to take camping, so we

click the check box next to portable grills.

e numbers in parentheses change again. We now see 34 gas grills and

33 charcoal grills. ese add to 67, the number of portable grills. ere are

34 models available in the Wal-Mart down the street from us that are por-

table and use either gas or charcoal as their fuel. We now click the check

box representing those 34 models.

Next to Available Today, we see ...