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Measures Of Center And Spread Quiz 1 (25 MCQs)

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1. The number of text messages that Isaac received each day for a week is shown:47, 49, 54, 50, 48, 47, 55What is the mean and median
2. Which of the following measures of central tendency is not appropriate when you have extreme scores in your sample data
3. The first quartile (Q 1) is the median of the lower half of the set.2-The second quartile (Q 2) is the median of the whole set .3-The third quartile (Q 3) is the median of the upper half of the set.
4. Portion of objects drawn from the population
5. A _____ is a graphical display of the five number summary.
6. A data value x is an outlier if if:x < Q 1-1.5(IQR) or if:x > Q 3 + 1.5(IQR).
7. What splits the data in half?
8. Given the data:136, 150, 119, 150, 125, 143.Find the interquartile range (IQR)
9. The _____ of a data set is the sum of the data entries divided by the number of entries.
10. Which number is not the mean, median, or range of the data set 4, 3, 15, 11, 3, 8, 7, 5?
11. When a distribution is skewed to the left, _____
12. Given the data:136, 150, 119, 150, 125, 143.Find the range.
13. Numbers representing counts or measurements
14. Given the following statistics about scores on the last math test, what is the best description of the shape of the distribution?Mean:= 78Standard Deviation = 4Min = 64Median = 78Q1 = 72Q3 = 84Max = 99
15. Which of the following lists all parts of the five number summary?
16. Given the data:21, 31, 26, 24, 28, 26This is a 3 part question:Part-1:What is the mean of the data?
17. Another name for Quartile 1 is
18. The _____ of a variable tells what values that variable takes and how often it takes them
19. Standard deviation is a measure of
20. Which is a true statement for the following data set? 5, 1, 5, 2, 5
21. A statistician has computed some data on the ages of people when they have their first child. The data showed the ages to be skewed right. Which of the following is the best way to describe the central tendency (typical value)?
22. Find the Quartile 1 or Q1.2, 3, 6, 6, 8, 10, 12
23. The numbers of runs scored by a softball team in 20 games are given. 3, 4, 8, 12, 7, 5, 4, 12, 3, 9, 11, 4, 14, 8, 2, 10, 3, 10, 9, 7What is the median of this data.
24. Which situation would require finding the median as an appropriate measure of center?
25. Find the Interquartile Range or IQR2, 3, 6, 6, 8, 10, 12
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