Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trialAlex Wilson
1,935 PointsHow to find the average of an array?
I have figured most of the challenge out but I can not figure out how to get the average.
-Thanks
NSArray *temps = @[@"75.5",@"83.3",@"96",@"99.7"];
float average;
float runningTotal = 0;
for (NSNumber *monkey in temps){
};
1 Answer
Cindy Lea
Courses Plus Student 6,497 PointsFirst, you need to add all the values, then once totals are done you divive total by number of items in array:
NSArray *temps = @[@75.5, @83.3, @96, @99.7];
float average ;
float runningTotal ;
for (NSNumber *itemsInTemp in temps) {
runningTotal += [ itemsInTemp floatValue] ;
}
average = runningTotal/temps.count;