Elementary Statistics Using the TI-83/84 Plus Calculator (5th Edition)

Chapter 2

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50, No. ; The frequency column gives the number of... more

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14%, 44%, 28%, 4%, 10% ; Let n denote the sum of ... more

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Relative frequency column does not sum to 100%.... more

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Class width = 10Class midpoints = 24.5, 34.5, 44.5... more

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Class width = 10Class midpoints = 24.5, 34.5, 44.5... more

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Class width = 100Class midpoints =  49.5, 149.5, ... more

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Class width = 100Class midpoints = 149.5, 249.5, ... more

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No, the data are not approximately normal. ; The ... more

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Yes, the data are approximately normal. ; The ... more

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 Class IntervalFrequency125 - 1491150 - 1740175 - ... more

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 ValueFrequency024116223241 The distribution is ... more

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 Class IntervalFrequency70 - 10911110 - 14923150... more

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 Class IntervalFrequency30 - 69170 - 1096110 - ... more

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 Class IntervalFrequency70 - 14925150 - 22915230... more

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 Class IntervalFrequency30 - 69470 - 10911110 - ... more

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 Last DigitFrequency091221334151562708391They ... more

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 Last DigitFrequency0261121324251261708491 The ... more

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 Class (Blood Platelet Count)Relative Frequency ... more

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 Class Interval Frequency80 - 9911100 - 119116120... more

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 Class IntervalFrequency40 - 542755 - 6910770 - ... more

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 Class IntervalFrequency1.00 - 1.49191.50 - 1.... more

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 Class IntervalFrequency0 - 9.953910 - 19.94920 - ... more

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Frequency distribution including the outlier. ... more

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The histogram will be symmetric bell-shaped and ... more

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No, the histogram may not be normally distributed... more

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The data set is too small to draw a histogram for... more

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The outlier will mostly appear as a single bar far... more

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40 ; To get the answer, we sum the heights of the ... more

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Class width = 0.1Lower class limit = 5.5Upper ... more

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There would be no change to the shape of the ... more

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Pre-1964 quarters were heavier than post-1964 ... more

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This does not appear to be a graph from the normal... more

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The histogram appears to be positively skewed.  ; ... more

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The histogram appears to be positively skewed. ; ... more

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The histogram is not symmetric and hence does not ... more

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The histogram appears to be positively skewed. ; ... more

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The peak of the histogram is not in the center of ... more

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The digits 0 and 5 appear more frequently than the... more

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The digits 0 and 5 appear more frequently than the... more

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Points have a systematic pattern and deviate away ... more

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Since the size of the data set is small, a graph ... more

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No, since the sample is not random, drawing a ... more

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No. A graph should always be a true representation... more

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CVDOT represents Center, Variation, Distribution, ... more

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The data point 36 appears to be an outlier. ; From... more

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There do not appear to be any outliers present in ... more

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3 | 64 |5 | 6 6 86 | 0 4 4 6 6 6 7 | 6 8 8 8 8 | 0... more

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6 | 0 0 2 2 4 6 8 7 | 0 0 0 0 2 4 6 6 8 8 8 | 2 2 ... more

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There appears to be an initial upward trend which ... more

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Number of home runs appear to increase from 1990 ... more

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Yes, misconduct appears to be a major factor. ; ... more

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From the plot it appears that most subjects send ... more

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; The total number of retractions is .The size of... more

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; The total number of responses is 40 + 396 + 40... more

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The distribution appears to be left skewed as the ... more

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The distribution appears to be right skewed as the... more

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The y-axis does not start from 0 and hence the bar... more

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The increase in price is 2.5 times but the visual ... more

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The cost of a C-section is not even twice that of ... more

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Income is a one-dimensional measure. Using 3-... more

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96 |96 | 5 9 97 | 0 0 0 1 1 1 2 3 3 3 4 4 4 97 | 5... more

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The correlation coefficient measures how well the ... more

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No, finding a correlation between two variables ... more

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A scatterplot is a graphical representation of ... more

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From the scatterplot there appears to be no strong... more

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 There appears to be a positive correlation ... more

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 There appears to be a negative correlation ... more

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 There appears to be no linear relationship ... more

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Number of pairs of data points (n) is 5. The ... more

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Number of pairs of data points (n) is 7. The ... more

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Number of pairs of data points (n) is 7. The ... more

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The number of pairs of data points, n, is 10. The ... more

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Here, the p-value of 0.839 is quite large. We can ... more

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Here the p-value of 0.000 is very small. We can ... more

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Here, the p-value of 0.000 is very small. We can ... more

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Here the p-value of 0.963 is quite large. We can ... more

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Class width = 3.It is not possible to identify the... more

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Class boundaries are 17.5 and 20.5.Class limits ... more

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Total number is 40. ; Total number of cookies is 6... more

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The values are 19 and 19.  ; The first row of the ... more

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Pareto chart ; The Pareto chart is a type of bar ... more

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Histogram ; We have a large sample size and the ... more

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Scatterplot ; To examine the relationship between ... more

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In statistics the term 'normal' implies a ... more

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Variation ; The acronym CVDOT gives the 5 ... more

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If the distribution is symmetric and bell-shaped ... more

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 Class widthFrequency97.0 - 97.4297.5 - 97.9498.0... more

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The histogram is symmetric, bell-shaped and ... more

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The dot plot gives a good visual representation of... more

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97. | 1 2 5 6 6 8 98. | 0 0 2 2 2 3 4 6 6 7 7 999... more

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There does not appear to be any relationship ... more

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; Pie charts convert frequencies to angle ... more

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; The Pareto chart is a type of bar chart in ... more

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 Class (Hours)Frequency235 - 2394240 - 2443245 - ... more

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The distribution appears to be closest to the ... more

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We can change the scale of the y-axis to start ... more

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23 | 6 7 8 9 24 | 1 1 2 5 5 5 6 7 7 8 8 925 | 0 0 ... more

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Company DD ; The average lunch drive-through ... more

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Company DD. ; The average dinner drive-through ... more

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Yes, they appear different. The lunch drive ... more

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Company DD appears to have a relative advantage to... more

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Company BK appears to be more efficient when ... more

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