1 Following are the running times (in minutes) for the12top-grossing movies rated PG or PG-13, and the12 top-grossing movies rated R, for the recent weekend. Construct back-to-back stem-and-leaf plots for these data sets. If there are no leaves on a particular stem, select the "None" button.

Movies rated PG or PG-13Movies rated RWreck-It Ralph108

Lincoln145 108

Quartet98 145

Dark Skies97 98

Life of Pi126 97

Escape From Planet Earth89 126

The Hobbit: An Unexpected Journey166 89

Emperor98 166

The Last Exorcism Part II88 98

Warm Bodies97 88

The Incredible Burt Wonderstone100 97

Snitch112 100

Movies rated R

Silver Linings Playbook 122

A Good Day to Die Hard 97

Parker 118

Zero Dark Thirty 157

Argo 120

Phantom 97

Identity Thief 111

Spring Breakers 94

21 and Over 93

Hansel and Gretel: Witch Hunters 88

Dead Man Down 110

The Call 95

PG OR PG-13 Rated R

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