LOS ANGELES (Reuters) - Prolific filmmaker Tyler Perry scored his second number one movie of the year at the North American box office on Sunday, leading a weak field of newcomers in what is traditionally one of the industry's slowest weekends.

Perry's latest family comedy, "I Can Do Bad All By Myself," sold $24 million worth of tickets during the three days beginning Friday, distributor Lionsgate said.

The writer-producer-director-actor, whose low-budget films are popular among black women, did better in February with "Madea Goes to Jail," which opened to a personal best of $41 million. But exactly a year ago, Perry's "The Family That Preys" opened to $17 million. The two most recent films starred Perry's alter ego Madea, a pistol-packing granny.

Also new was the animated film "9" at nu mber two with $10.9 million, in line with expectations. The film got an early start on the competition by opening on Wednesday, and its total stands at $15.3 million.

The horror movie "Sorority Row" debuted at number six with $5.3 million, and English actress Kate Beckinsale's icy thriller "Whiteout" came in at number seven with $5.1 million. Both films, targeting younger moviegoers, were expected to open in the high-single-digit range.

Business usually drops sharply in the first weekend following the US Labor Day holiday weekend, as children return to school and football season kicks in. The studios respond in kind by clearing out their summer leftovers.

The top 12 films grossed $78 million, according to tracking firm Hollywood.com Box-Office. This represents a three percent drop from last weekend, and a nine percent fall from the year-ago period, the company said.

After two weekends at number one, the horror film "The Final Destination" fell to number five with $5.5 million, taking its total to $58.3 million.

Quentin Tarantino's Nazi revenge fantasy "Inglourious Basterds" slipped one place to number three with $6.5 million in its fourth weekend. The film has now earned $104.4 million, and needs just $4 million more to become his biggest film in North America. The title is currently held by "Pulp Fiction," which earned $108 million in 1994.

nation" were released by Warner Bros Pictures, a unit of Time Warner Inc.