Join the RBI—a group of teen agents with special gifts—on a series of action-packed adventures as they travel the world! The RBI travel to the plains of East Africa to investigate strange sightings of unbelievable animals, and find local people terrified of the unnatural animal cries they hear in the night. With DUL agents hot on their trail, the RBI find themselves on one of their most scary and dangerous missions so far as the adventure leads them to the mysterious lost island.

Join the RBI—a group of teen agents with special gifts—on a series of action-packed adventures as they travel the world! Reports of mysterious fires, exploding trees, and unexplained power outages in a remote Rocky Mountain town reach the RBI. Is there any truth in the terrifying stories of a strange figure in the forest with sparks flying from his fingertips? Using their own powerful skills, the RBI are tested to their limits on this sizzling adventure.

Join the RBI—a group of teen agents with special gifts—on a series of action-packed adventures as they travel the world! A plane crash ten years ago and reports of a strange wolf boy lead the RBI to the wilds of western China and to a girl who thinks that the creature might be her long-lost brother. But the mountains and surrounding jungle are full of dangers. Can the team brave hungry tigers, snarling wolves and treacherous ravines to uncover the truth? A dangerous mission for the RBI.

Join the RBI—a group of teen agents with special gifts—on a series of action-packed adventures as they travel the world! The Florida swamplands are home to hungry gators, wild electrical storms, and a most unusual creature. Sightings of a strange lizard-like animal reach Ripley High and the RBI are sent to investigate. During their search, the RBI agents find themselves in the middle of a high-speed airboat chase, a swarm of rats, a mysterious treasure hunt, and DUL agents in disguise. But then that’s nothing unusual when you’re a member of the RBI!

Join the RBI—a group of teen agents with special gifts—on a series of action-packed adventures as they travel the world! The RBI team begin to link together the hidden clues that they have found on their last few missions and the results point them towards Antarctica and an ancient ice station. However, terrible blizzards, floating ice, and a man who swims with the seals make their hunt for a lost artifact anything but easy!

Join the RBI—a group of teen agents with special gifts—on a series of action-packed adventures as they travel the world! In an eerie underwater cavern, human hands reach out from the seabed searching the dark water. The RBI are sent on a watery quest to find out what lies beneath. How do mysterious happenings on the sea at night, an angry school of sharks, and zombie ghost stories link with this creepy new mission? The RBI are on a mission to search out the truth!

Join the RBI—a group of teen agents with special gifts—on a series of action-packed adventures as they travel the world! The coast of Japan is being terrorized by a mysterious creature. The RBI are sent to investigate sightings of red glowing eyes that peer out of sea mists and an enormous beast that breathes fire and tramples cars. A trip to Japan reveals a bizarre inventor and stories of a slumbering sea dragon. Is their mission linked to the old legend of the “Dragon’s Triangle” and its tales of disappearing ships?

The Florida swamplands are home to hungry gators, wild electrical storms, and a most unusual creature. Sightings of a strange lizard-like animal reach Ripley High and the RBI are sent to investigate. During their search, the RBI agents find themselves in

One of the most successful entertainment figures of his time, Robert Ripley’s life is the stuff of a classic American fairy tale. Bucktoothed and hampered by shyness, Ripley turned his sense of being an outsider into an appreciation of the weird and wonderful. He sold his first cartoon to LIFE magazine at eighteen, but it was his wildly popular ‘Believe It or Not!’ radio shows that won him international fame, and spurred him on to search the globe’s farthest corners for bizarre facts, human curiosities and shocking phenomena. Ripley delighted in making preposterous declarations that somehow turned out to be true – such as that Charles Lindburgh was only the sixty-seventh man to fly across the Atlantic or that ‘The Star Spangled Banner’ was not the USA’s national anthem. And he demanded respect for those who were labelled ‘eccentrics’ or ‘freaks’ – whether it be E. L. Blystone, who wrote 2,871 alphabet letters on a grain of rice, or the man who could swallow his own nose. By the 1930s, Ripley possessed a wide fortune, a private yacht and a huge mansion stocked with such oddities as shrunken heads and medieval torture devices. His pioneering firsts in print, radio and television tapped into something deep in the American consciousness – a taste for the titillating and exotic, and a fascination with the fastest, biggest, wackiest and weirdest – and ensured a worldwide legacy that continues today. This compelling biography portrays a man who was dedicated to exalting the strange and unusual – but who may have been the most amazing oddity of all.

Statistical Computation for Programmers, Scientists, Quants, Excel Users, and Other Professionals Using the open source R language, you can build powerful statistical models to answer many of your most challenging questions. R has traditionally been difficult for non-statisticians to learn, and most R books assume far too much knowledge to be of help. R for Everyone, Second Edition, is the solution. Drawing on his unsurpassed experience teaching new users, professional data scientist Jared P. Lander has written the perfect tutorial for anyone new to statistical programming and modeling. Organized to make learning easy and intuitive, this guide focuses on the 20 percent of R functionality you’ll need to accomplish 80 percent of modern data tasks. Lander’s self-contained chapters start with the absolute basics, offering extensive hands-on practice and sample code. You’ll download and install R; navigate and use the R environment; master basic program control, data import, manipulation, and visualization; and walk through several essential tests. Then, building on this foundation, you’ll construct several complete models, both linear and nonlinear, and use some data mining techniques. After all this you’ll make your code reproducible with LaTeX, RMarkdown, and Shiny. By the time you’re done, you won’t just know how to write R programs, you’ll be ready to tackle the statistical problems you care about most. Coverage includes Explore R, RStudio, and R packages Use R for math: variable types, vectors, calling functions, and more Exploit data structures, including data.frames, matrices, and lists Read many different types of data Create attractive, intuitive statistical graphics Write user-defined functions Control program flow with if, ifelse, and complex checks Improve program efficiency with group manipulations Combine and reshape multiple datasets Manipulate strings using R’s facilities and regular expressions Create normal, binomial, and Poisson probability distributions Build linear, generalized linear, and nonlinear models Program basic statistics: mean, standard deviation, and t-tests Train machine learning models Assess the quality of models and variable selection Prevent overfitting and perform variable selection, using the Elastic Net and Bayesian methods Analyze univariate and multivariate time series data Group data via K-means and hierarchical clustering Prepare reports, slideshows, and web pages with knitr Display interactive data with RMarkdown and htmlwidgets Implement dashboards with Shiny Build reusable R packages with devtools and Rcpp Register your product at informit.com/register for convenient access to downloads, updates, and corrections as they become available.