frequency table

frequency table : In statistics, a frequency distribution is a tabulation of the values that one or more variables take in a sample. Univariate frequency distributions are often presented as lists ordered by quantity showing the number of times each value appears. For example, if 100 people rate a five-point Likert scale assessing their agreement with a statement on a scale on which 1 denotes strong agreement and 5 strong disagreement, the frequency distribution of their responses might look like: This simple tabulation has two drawbacks. When a variable can take continuous values instead of discrete values or when the number of possible values is too large, the table construction is cumbersome, if it is not impossible. A slightly different tabulation scheme based on the range of values is used in such cases. For example, if we consider the heights of the students in a class, the frequency table might look like below. A Frequency Distribution shows us a summarized grouping of data divided into....   More from Wikipedia

frequency table : Several techniques can be used to move signals in the time-frequency distribution. Similar to computer graphic techniques, signals can be subjected to horizontal shifting, vertical shifting, dilation (scaling), shearing, and rotation. These techniques can help to save the bandwidth with proper motions..   More from Wikipedia

  A frequency table is created to give a certain piece of data, such as how many siblings each member of a classroom has. Find out how to make and interpret a frequency table withhelp from a tutor in this free video on math lessons and study tips. Expert: Brian Leaf Contact: www.brianleaf.com Bio: Brian Leaf, MA, is the author of McGraw-Hill's "Top 50 Skills for SAT/ACT Success" series. Filmmaker: David Pakman

  A brief lesson on creating and interpreting histograms and frequency tables. This video is part of the 2009 Boston Red Sox Summer Math Program created by Brian Nelson. Brian Nelson is a middle school math teacher in Wakefield, RI

Question : test scores and frequency 100 2 95 3 90 7 85 8 80 7 75 3 use frequency table to find mean. find median. find mode. if the lowest test score shown in the frequency table had been 70 instead of 75. which would be true? lower median 80 lower mean 85.5 higher median 30 higher mean 90

Answer : Add 100+100+95+95+95+90+90+90+90+90+90+90+... are you seeing a pattern here? Do it all: 2x100+ 3x95+ 7x90 +8x85 + 7x80 + 3x75. Add. Realize that there are 30 scores... so divide the sum by 30. That's the mean. The median is the number in the middle if you listed all the grades in numerical order. You can (should?) do that - but, THINK: "With 30 grades, the middle one [if I listed them] would be #15... or 16..? Well, start "counting" from either the top or the bottom. The 15th score will be an 85. Mode is a "no-brainer": The mode is whatever score shows up the most. By inspection the mode is 85 because there were 8 of that score. If there had been 3 scores of 70 (instead of 75) you KNOW it would not result in higher anything. Would the median - the middle number - be changed? No, it's still 85. Would the mean - the average - be changed? Well, of course: You still have to divide the sum of all the grades by 30 - but the sum of the grades....   More from Yahoo Answers

Question : im supposed to make a frequency table and i dont know how to make one so that people will look at it and know what i spend my hours doing. pleez help!

Answer : The x-axis (horizontal axis) will simply have bins, or partitions, that will have nothing to do with anything else on the x-axis. Make an axis and mark off 1" sections. In section 1 simply write "Sleeping" below the line. In section 2 write, "eating". In section 3 write, "talking with friends". You get the idea. Have a section for each of the things that you do. For a simple frequency table it does not matter what order the 'things' are in/ The Y-axis will be labled "Minutes", and it will start at zero minutes (at the place where X and Y axes cross). Look at your list of times. What is the most time you spent doing anything (it's probably sleeping at about 480 minutes). Round that number up to the nearest 100 minute interval and that will be the largest number on your Y-axis. Now... for each 'thing', make a bar in that section that goes up to the number of minutes you did that 'thing'. You can have space in between the bars, or have them touch each other. You can make....   More from Yahoo Answers