objective question

What is the mode and the mean for the following set of numbers? {4,9,8,2,16,4,4,8,9,6} O A. Mean = 7, mode =8 O B. Mean = 7, mode =4 O C. Mean = 6, mode =8 O D. Mean = 8, mode =9 You are conducting a survey of the people of the United Kingdom to find out how popular the racket sports are. You randomly choose people to call, and make 1,000 phone calls to people scattered across the country. In this study, what is the statistics term for THE PEOPLE IN THE U.K., and what is the statistics term for THE PEOPLE YOU CALLED? O A.Both the people of the U.K. and the people you called are POPULATIONS O B.The people of the U.K. are the POPULATION, and the people you called are the SAMPLE. O C.The people of the U.K. are the SAMPLE, and the people you called are the POPULATION. O D.Both the people of the U.K. and the people you called are SAMPLES. Relative Frequency 0.45 0.4 0.35 0.25 0.15 0.05 ST 3FG FG Consider the following bar chart of Basket points sources. Three of the following statements are correct, one is NOT. Which of the following statements is incorrect? O More points are scored in the 3-pt line than steals. O About 70% of the points come from Free throws and 2-point shots. O Most points come from the 2-point shots. O The distribution is skewed to the left. Which of the following definitions is the definition of the MEDIAN? A.The MEDIAN is the value that half of the entries are below and half of the entries are above. O B.The MEDIAN is the value that has the highest frequency. O C.The MEDIAN is the largest value. O D.The MEDIAN is the average calculated by adding up all the values and dividing by the number of entries. Which of the following definitions is the definition of the MODE? O A.The MODE is the value that has the highest frequency O B.The MODE is the average calculated by adding up all the values and dividing by the number of entries. OD.The MODE is the value that half of the entries are below and half of the entries are above. The mean points of NBA players is 20 points a game with a standard deviation of 5. The mean points for the PBA (Philippine Basketball Association) is 30 with a standard deviation of 10. Wesley scores 22 points a game for the NBA while Doria scores 31 points a game for the PBA. Who has scores the highest in their league? O Wesley O Doria Suppose you are told that sales this year are 30% higher than they were six years ago. What has been the average annual increase in sales over the past six years? O 5.0% O 4.5% O 4% O 3.5% Median Min Max Q1 50 | 150 | Q3 70 | 85 100 Consider the following 5-number summary of 120 NBA teams scores: Which of the following observations in the data set would be called a suspected outlier? O An observation between 85 and 100. O An observation less than 125. O An observation between 70 to 100. O An observation greater than 145 O There are no suspected outliers in this data set. Stats 221 Test#1 Score Provo SLC Here are the boxplots of Stats 221 Final scores for Provo and Salt Lake Campus: Fifty percent of the SLC students scored approximately between 65 and 85. O True O False You are interested in how stress affects heart rate in humans. Your dependent variable would be the A.Interest O B.Heart rate O C.Humans O D.Stress What does the standard deviation of a distribution measure? O Shape O Spread O Center O skewness A study was conducted using growing rats to examine the effect of jumping height on the strength of bones. Thirty rats were randomly allocated into groups. The first group of rats did low jumps of 30 cm. And the second group of rats did high jumps of 60 cm. After 8 weeks of 10 jumps per day, 5 days per week, the bone density of the rats was measured in mg/cm3. What is the explanatory variable? O Growing rats O Height of jump O Bone density as measured in mg/cubic cm. O Age of rat. Stats 221 Test#1 Score Provo SLC Here are the boxplots of Stats 221 Final scores for Provo and Salt Lake Campus: Fifty percent of the SLC students scored approximately between 65 and 85. O True O False What is the median of the following set of numbers? {12,8,13,4,7,6,3,3,15} O A. 12 OB. 8 O c. 7 O D. 7.5 Stats 221 Test+1 Score 0 Provo --- SL Here are the boxplots of Stats 221 Final scores for Provo and Salt Lake Campus: The mean is greater than the median for scores in Provo. O True O False You are conducting a study to see whether a new experimental medication will cause bald men to grow hair. You divide your patients into 2 groups. To one group you give the medication. To the other group, you give a placebo. In this study, the correct terms for the taking of the medication and the growth of hair are the following. O A.Both the medication and the hair growth are dependent variables. O B.Both the medication and the hair growth are independent variables. O C.The medication is the dependent variable, and the hair growth is the independent variable. O D.The medication is the independent variable, and the hair growth is the dependent variable. Question 17 Suppose you are told that the mean of a sample is below the median. What does this information suggest about the distribution? O The distribution is symmetric. O The distribution is skewed to the right or positively skewed. O The distribution is skewed to the left or negatively skewed. O There is insufficient information to determine the shape of the distribution. Suppose you are told that the average return on investment for a particular class of investments was 7.8% with a standard deviation of 2.3. Furthermore, the histogram of the distribution of returns is approximately bell-shaped. We would expect that 95 percent of all of these investments had a return between what two values? O 5.5% and 10.1% 0 0% and 15% O 3.2% and 12.4% O 0.9% and 14.7%