Averages On A Calculator
Akopọ
Finding averages by hand is fine for a few values, but real data sets can have hundreds of entries. A graphic display calculator handles them in seconds: type the data into a list, run the one-variable statistics, and read off the mean, median and quartiles instantly. It even handles grouped data using frequencies.
In this lesson you will learn the general calculator method, described in words so it works on any model, for finding the mean, median and quartiles of discrete data, and the mean of grouped data. This frees you to focus on interpreting the results rather than grinding through arithmetic.
Awọn Afojusun
- Use a graphic display calculator to calculate: 1 mean, median and quartiles for discrete data 2 mean for grouped data.
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Oriire fun ipari ẹkọ lori Averages On A Calculator. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
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- On a calculator, which menu reports the mean, median and quartiles of a data set? A. graphing menu B. one-variable statistics C. equation solver D. table menu Answer: B
- For the data 3, 5, 6, 8, 9, 11, 14, what mean does the calculator report? A. 7 B. 8 C. 9 D. 56 Answer: B
- For the data 3, 5, 6, 8, 9, 11, 14, what is the lower quartile Q1? A. 5 B. 6 C. 8 D. 11 Answer: A
- For grouped data with midpoints 5, 15, 25 and frequencies 4, 10, 6, what is the estimated mean? A. 14 B. 15 C. 16 D. 20 Answer: C
- When entering repeated values, what should you enter in a second list? A. the squares of the values B. the frequencies C. the midpoints D. the medians Answer: B
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Ẹ̀kọ́ síwájú láti àwọn orísun ṣíṣí
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Abala ìwé ẹ̀kọ́
Measures of the Center of the Data
The "center" of a data set is also a way of describing location. The two most widely used measures of the "center" of the data are the mean (average) and the median . To calculate the mean weight of 50 people, add the 50 weights together and divide by 50. To find the median weight of the 50 people,
"Introductory Statistics: Measures of the Center of the Data" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/introductory-statistics/pages/2-5-measures-of-the-center-of-the-data. Access for free at https://openstax.org/books/introductory-statistics/pages/1-introduction
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