
Probability and Statistics Basic Probability and Statistics Math Forum 
 LinkBack  Thread Tools  Display Modes 
December 13th, 2016, 12:03 PM  #1 
Newbie Joined: Dec 2016 From: New Orleans, Louisiana, USA Posts: 1 Thanks: 0 Math Focus: Stat's!  "Shortcut" to the Mean of Tabular Data?
Hello All, I'm going through a study guide for the Professional Level Entry Exam (PLE) for Civil Service, which includes some statistics and math problems. One question involves obtaining the mean from the following tabular data: I'm pretty good with stat's, but I've never been especially good at "math". I know I can arrive at the mean by multiplying the frequency by the value in each sample, summing those and dividing by the number of samples (7). However, no calculator is allowed while taking the exam, and it seems this would take a lot of time to do longhand. Given that the test is timed, I'm wondering if there is a "shortcut" to the mean  one I don't know about or can't figure out  that gets around calculating it all out. I can create sort of a histogram in my head and guess, but I'm not comfortable with that level of accuracy. Thanks in advance! N1UK 

Tags 
average, data, shortcut, shortcuts, statistics, tabular 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
A "simple" application of dirac delta "shift theorem"...help  SedaKhold  Calculus  0  February 13th, 2012 12:45 PM 
"separate and integrate" or "Orangutang method"  The Chaz  Calculus  1  August 5th, 2011 10:03 PM 
"Decycle" data  SysInv  Complex Analysis  1  November 14th, 2010 07:26 AM 
sample exerimentneed help finding "statistic" and "result"  katie0127  Advanced Statistics  0  December 3rd, 2008 02:54 PM 
terms "nonincreasing" or "nondecreasing"  Ujjwal  Number Theory  2  September 29th, 2008 08:06 AM 