Measures Of Central Tendency & Spread

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| By Dana Deuitch
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Dana Deuitch
Community Contributor
Quizzes Created: 3 | Total Attempts: 2,433
| Attempts: 104 | Questions: 9
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1. Use the following set of data for all the questions: {4,5,5,5,5,6,7,7,7,8,9,11} Find Range

Explanation

Range = Max - Min

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About This Quiz
Measures Of Central Tendency & Spread - Quiz

One Variable Statistics - Measures of Central Tendency and Measures of Spread

2. Use the following set of data for all the questions: {4,5,5,5,5,6,7,7,7,8,9,11} Find the mode

Explanation

The most common value

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3. Use the following set of data for all the questions: {4,5,5,5,5,6,7,7,7,8,9,11} Find Q1

Explanation

Q1 is the median of the lower half of the data

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4. Use the following set of data for all the questions: {4,5,5,5,5,6,7,7,7,8,9,11} Find the median

Explanation

Find the middle value. (in this case halfway between the two middle values)

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5. Use the following set of data for all the questions: {4,5,5,5,5,6,7,7,7,8,9,11} Find Q2

Explanation

Q2 is the median of the whole list

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6. Use the following set of data for all the questions: {4,5,5,5,5,6,7,7,7,8,9,11} Find the mean (correct to 2 decimal places)

Explanation

Add them all up and divide by the number of items.

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7. Use the following set of data for all the questions: {4,5,5,5,5,6,7,7,7,8,9,11} Find IQR

Explanation

IQR = Q3 - Q1

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8. Use the following set of data for all the questions: {4,5,5,5,5,6,7,7,7,8,9,11} Find Standard Deviation (correct to 2 decimal places)

Explanation

First find the sum of all the x squared values (565), subtract the count (12) times the mean (6.5833333) squared, then divide by the count (12), and finally take the square root.

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9. Use the following set of data for all the questions: {4,5,5,5,5,6,7,7,7,8,9,11} Find Q3

Explanation

Q3 is the median of the upper half of the data

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Use the following set of data for all the questions:...
Use the following set of data for all the questions:...
Use the following set of data for all the questions:...
Use the following set of data for all the questions:...
Use the following set of data for all the questions:...
Use the following set of data for all the questions:...
Use the following set of data for all the questions:...
Use the following set of data for all the questions:...
Use the following set of data for all the questions:...
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