B IUvab X x Av L A v Styles Styles Dictate Sens Pane This output relates to the scores on a standardized test of a sample of Minnesota school students. Statistics Variable N Mean SE Mean StDev Minimum Q1 Median Q3 Maximum TestScore 533 420.27 5.78 133.47 210.00 332.50 382.00 470.00 998.00 (1 1/2) 13. Based on the above output, it would appear that the variable "TestScore" is. . . a. skewed left (negatively skewed). b. perfectly symmetrical. c. skewed right (positively skewed). It is impossible to determine the skewness of "TestScore" from this output alone. (31/2) 14. The daily usage of water by a sample of households is shown below. Gallons a) How many observations are there in this study? 257 289 b) How many samples are there in this study? 324 301 c) Numbers such as the mean, median, standard deviation, etc. for these data are examples of... 246 a. variables. 311 b. statistics. 277 C. parameters d. observations. e. samples. f. cases (1 1/2) 15. The scatterplot presented to the right shows the relationship Scatterplot of Y vs X between two variables, X and Y. Given 80 this plot, what would a competent 70 statistician conclude about the relationship between these two variables? 60 a. These two variables may well be independent. 40 b. These two variables are 30 probably dependent. C. There is no way to assess 20 whether these variables are dependent or independent. of 14 3355 words TX English (United States) Accessibility: Investigate Focus EO Neso | Proctorio is sharing your screen. Stop sharing Hide MacBook Air DII DD A FA F5 F6 F7 FB FO F10 % 5 6 8 O T Y U O PTimes New... v 11 A A Aav B I Uv ab X 2 x 2 IEV Styles Styles Dictate Sensitiv Pane f. case The following information is to be used for questions 9-11 (1/2) 9. Based on the boxplot shown to the right, it would appear that this variable is. . . Boxplot of Data a. skewed left (negatively skewed). b. perfectly symmetrical. 70 c. skewed right (positively skewed). 60- (1 1/2) 10. What is the value of the mean for the data pictured in this boxplot? a. something less than 60 50 b. exactly 60 Data c. something greater than 60 (1/2) 1 1. What is the approximate value of 30 the standard deviation of the data pictured in this boxplot? 20 (11/2) 12. Which boxplot shown to the right has the largest standard deviation? a. A b. B c. C d. D e. The answer cannot be determined without knowing the values on the Data vertical scale. of .14 3355 words x English (United States) Accessibility: Investigate E Focus EO Nesci Proctorio is sharing your screen. Stop sharing Hide MacBook Air DD DII DD A 586 FB FO F 10 F6 F7 % 7 8 9 O T Y U O P