This quiz works best with JavaScript enabled. Home > Ugc Net > Paper 1 > Research Stats > Measures Of Center And Spread – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Measures Of Center And Spread Quiz 1 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 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 A) Mean=50 Median=54. B) Mean=49 Median=54. C) Mean=49 Median=50. D) Mean=50Median=49. Show Answer Correct Answer: D) Mean=50Median=49. 2. Which of the following measures of central tendency is not appropriate when you have extreme scores in your sample data A) Mode. B) Median. C) Mean. D) None of the above. Show Answer Correct Answer: C) Mean. 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. A) All three statements are true. B) Only the 1st statement is true. C) Only the 2nd and the 3rd statements are true. D) Only the 3rd statement is true. Show Answer Correct Answer: A) All three statements are true. 4. Portion of objects drawn from the population A) Sample. B) Statistics. C) Descriptive Statistics. D) Population parameter. Show Answer Correct Answer: A) Sample. 5. A ..... is a graphical display of the five number summary. A) Stemplot. B) Histogram. C) Dotplot. D) Boxplot. Show Answer Correct Answer: D) Boxplot. 6. A data value x is an outlier if if:x < Q 1-1.5(IQR) or if:x > Q 3 + 1.5(IQR). A) False. B) Depends on the data size. C) Sometimes true. D) Always true. Show Answer Correct Answer: D) Always true. 7. If a number is added to a set that is far away from the mean, how does this affect standard deviation? A) Increase. B) Decrease. C) Stay the same. D) Both increase and decrease. Show Answer Correct Answer: A) Increase. 8. What splits the data in half? A) Upper Quartile. B) Median. C) Lower Quartile. D) None of above. Show Answer Correct Answer: B) Median. 9. Given the data:136, 150, 119, 150, 125, 143.Find the interquartile range (IQR) A) IQR = 150-119 = 31. B) IQR = 150-125 = 75. C) IQR = 150-125 = 25. D) IQR = 150-119 = 31. Show Answer Correct Answer: C) IQR = 150-125 = 25. 10. The ..... of a data set is the sum of the data entries divided by the number of entries. A) Mean. B) Mode. C) Range. D) Median. Show Answer Correct Answer: A) Mean. 11. Which number is not the mean, median, or range of the data set 4, 3, 15, 11, 3, 8, 7, 5? A) 6. B) 11. C) 7. D) 12. Show Answer Correct Answer: B) 11. 12. When a distribution is skewed to the left, ..... A) The mean is less than the median. B) The mean is greater than the median. C) The median is less than the mean. D) The mean and median are approximately equal. Show Answer Correct Answer: A) The mean is less than the median. 13. Given the data:136, 150, 119, 150, 125, 143.Find the range. A) Range = 150-125 = 75. B) Range = 150-119 = 31. C) Range = 150-125 = 25. D) Range = 136-125 = 21. Show Answer Correct Answer: B) Range = 150-119 = 31. 14. Numbers representing counts or measurements A) A Statistic. B) Population parameter. C) Qualitative Data. D) Quantitative Data. Show Answer Correct Answer: D) Quantitative Data. 15. 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 A) Uniform. B) Skewed Right. C) Skewed Left. D) Roughly Symmetric. Show Answer Correct Answer: D) Roughly Symmetric. 16. Which of the following lists all parts of the five number summary? A) Mean, Median, Mode, Range, and Total. B) Minimum, Quartile 1, Median, Quartile 3, and Maximum. C) Smallest, Q1, Q2, Q3, and Q4. D) Minimum, Maximum, Range, Mean, and Median. Show Answer Correct Answer: B) Minimum, Quartile 1, Median, Quartile 3, and Maximum. 17. If 10 is added to every value in a set of data, what will happen to the value of the standard deviation? A) It will increase. B) It will decrease. C) It will stay the same. D) It will both increase and decrease. Show Answer Correct Answer: C) It will stay the same. 18. Given the data:21, 31, 26, 24, 28, 26This is a 3 part question:Part-1:What is the mean of the data? A) 25. B) 24. C) 26. D) 27. Show Answer Correct Answer: C) 26. 19. Another name for Quartile 1 is A) Median. B) Minimum. C) Median of the Upper Half. D) Median of the Lower Half. Show Answer Correct Answer: D) Median of the Lower Half. 20. The ..... of a variable tells what values that variable takes and how often it takes them A) Graph. B) Statistics. C) Data. D) Distribution. Show Answer Correct Answer: D) Distribution. 21. Standard deviation is a measure of A) Center. B) Spread. C) Outliers. D) Shape. Show Answer Correct Answer: B) Spread. 22. Which is a true statement for the following data set? 5, 1, 5, 2, 5 A) The median and mean are the same. B) The mode and median are the same. C) The mode, median, and mean are the same. D) The mode and mean are the same. Show Answer Correct Answer: B) The mode and median are the same. 23. 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)? A) Mode. B) Median. C) Mean. D) Midrange. Show Answer Correct Answer: B) Median. 24. Find the Quartile 1 or Q1.2, 3, 6, 6, 8, 10, 12 A) 3. B) 6. C) 7. D) 2. Show Answer Correct Answer: A) 3. 25. 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. A) Median = 7. B) Median = 7.5. C) Median = 8. D) Median = 12. Show Answer Correct Answer: B) Median = 7.5. 26. Which situation would require finding the median as an appropriate measure of center? A) All of the temperatures recorded were all between 80 degrees and 90 degrees. B) All of the temperatures recorded were 55 degrees. C) A few of the temperatures recorded were very low or very high. D) The temperatures recorded were either 20 degrees or 25 degrees. Show Answer Correct Answer: C) A few of the temperatures recorded were very low or very high. 27. Find the Interquartile Range or IQR2, 3, 6, 6, 8, 10, 12 A) 6. B) 10. C) 7. D) 3. Show Answer Correct Answer: C) 7. 28. Which of the following is NOT a measure of spread? A) Interquartile range. B) Median. C) Mean absolute deviation. D) Range. Show Answer Correct Answer: B) Median. 29. What is the median for this set of data?:26, 21, 22, 27, 22, 25, 39, 35 A) 25.5. B) 26. C) 25. D) 26.5. Show Answer Correct Answer: A) 25.5. 30. Which of these measures of central tendency is distorted by extreme values? A) Mean. B) Mode. C) Median. D) None of above. Show Answer Correct Answer: A) Mean. Next →Related QuizzesPaper 1 QuizzesUgc Net QuizzesMeasures Of Center And Spread Quiz 2Analysis Of Variance QuizChi Square QuizCoefficient Of Variation Discrete Serious And Continuous Serious QuizConcept Of Point And Interval Estimation QuizConcept Of Sampling And Other Concepts Related To Sampling QuizConfidence Intervals QuizCorrelation Coefficient Coefficient Of Determination Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books