Measures of Central Tendency: Mean
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- (Video) How to Find the Average by Math with Mr. J This video by Math with Mr. J defines the average of a data set. Summary Mean is the same as average. Average represents the t…
By Ben Ferrara, Alex Federspiel, Amy Feraco, Jonathan Heller, Anusha Rahman
- What is the Mean and How Do I Find It? We've covered other measures of central tendency, like median and mode. We know that median is the middle number, and mode is the frequent…
By Hannah Bonville, Alex Federspiel, Vatsal Ojha, Sarah Walker, Jonathan Heller, Caroline K, Anusha Rahman
- Mean You can find the mean, also called the average, xˉ\bar{x}xˉ (sample mean), or μ\muμ (population mean) by adding up all of the values in the data set, then dividing that sum…
By Caroline K, Anusha Rahman
Problems 32
- Find the mean of the set 3,5,1,6,3,2,13,5,1,6,3,2,13,5,1,6,3,2,1.
- What is the mean of the following set? {1,2,2,3,3,3,4,4,4,4,5,5,5,5,5}\{1,2,2,3,3,3,4,4,4,4,5,5,5,5,5\}{1,2,2,3,3,3,4,4,4,4,5,5,5,5,5}
- True or False\text{True or False}True or False === The mean of a set is always in the set.
- What is the mean of 1,3,3,4,8,9,12,161, 3, 3, 4, 8, 9, 12, 161,3,3,4,8,9,12,16?
- Consider the set of even numbers between 111 and 252525. What is the mean of this set?
- Find the mean of the set 49,28,28,45,37,2349, 28, 28, 45, 37, 2349,28,28,45,37,23.
- Find the mean of the set {137,148,101,111,115,108}\{137, 148, 101, 111, 115, 108\}{137,148,101,111,115,108}.
- Your average score on eight exams is 757575. Then, you take a ninth exam and your average score on exams increases to 767676. What was your score on the ninth exam?
- Suppose that a group of 666 people have an average weight of 140140140 pounds, and they meet a group of 444 people with an average weight of 150150150 pounds. What is the averag…
- You are recording the ages of 100010001000 people in a spreadsheet. You accidentally entered one person's age as 200020002000 rather than 202020. What is the difference between …
- The arithmetic mean of 555 test scores was 828282. If the highest score was 909090, what was the mean of the remaining 444 scores?
- Suppose that you have 121212 scores, all of which are integers between 222 and 999 inclusive. If you know that 999 of the scores are greater than or equal to 666, what is the lo…
- The average age in Schmittsburgh is 303030. The average age in Schmiladelphia is 404040. If Schmittsburgh has a population of 300000300000300000 and Schmiladelphia has a populat…
- You have 252525 numbers. The average of the first 101010 numbers is 151515, while the average of last 151515 numbers is 101010. What is the average of all of the numbers?
- Given the data above. Find the mean age in the club. Round to the nearest tenth.
- Given the data set above, which year should be excluded when calculating a mean that is representative of the data?
- The above table displays the frequency of scores on an AP exam. The mean of the scores is 333. What is the value of xxx in the table?
- During biology class, Dr. Abrams began discussing genes and the idea of heredity. The class was asked to participate in an activity where they each took a survey about hereditar…
- Last week there was an art exhibition at a local gallery. The exhibition lasted for five days. 234234234 people attended on Day One, 285285285 people attended on Days Two and Th…
- If she's rated the onion rings as 2,1,4.5,2,1,4.5,2,1,4.5, and xxx, what would the last onion ring need to be rated in order for the mean to be 333.
- The soil in Argentina is said to have a water absorption rate of 65%65\%65%. Meanwhile, the soil in Ethiopia is said to have a water absorption rate of 45%45\%45%. If you were t…
- Lake Wobegon is an average town with 100100100 residents. Lake Wobegon's residents vary in age, build, and height. What is the largest number of Lake Wobegon residents that can …
- Keeping with the tradition of giving red envelopes during the Chinese New Year, you and your cousins always exchange envelopes in order to pass along good luck. In your group of…
- Which of the following are not measured in whole numbers?
- Find the mean of the following data set: 19,22,29,38,47,55,61,63,91,9419, 22, 29, 38, 47, 55, 61, 63, 91, 9419,22,29,38,47,55,61,63,91,94
- Suppose the mean of a given data set was 252525. If the data set contained five values: 171717, 292929, 323232, 999, and xxx. What is the value of xxx?
- If you are solving for the mean, what are you finding?
- Consider the set of numbers from 111 to 101010 where every even number occurs twice. What is the mean of this set of numbers?
- Find the mean of the given data set rounded to the nearest whole number. 137,192,342,409,163,215,38,1041,763,14,637137, 192, 342, 409, 163, 215, 38, 1041, 763, 14, 637137,192,34…
- Laura keeps track of gas prices in her town for 888 weeks. Her data set includes the following: 3.10,3.04,2.96,3.09,3.10,3.16,3.01,2.87\3.10, \3.04, \2.96, \3.09, \3.10, \3.16, …
- Find the mean of the given data set rounded to the nearest whole number: 11,22,33,44,55,66,77,88,99,12,34,56,78,90,4211, 22, 33, 44, 55, 66, 77, 88, 99, 12, 34, 56, 78, 90, 4211…
- Connor McDavid is a young superstar in the NHL. In his first 333 seasons with the Edmonton Oilers, he has scored 256256256 points in 209209209 games. How many points does McDavi…