b. Complete the tally mark and frequency columns in the table below: Test Scores 65 70 75 80 85 90 95 100 Tally c. What score describes the center of the data? I Frequency

Data were gathered from two groups and displayed in the line plots. Data Set A Data Set B

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Twenty five right-handed students were asked to turn a knob (using their right hands) that moved an indicator by screw action. There were two identical instruments, one with a right-hand thread (the knob turns clockwise) and the other with a left-hand thread (the knob turns counterclockwise). The data presented below gives the times (in seconds) each subject took to move the indicator a fixed distance: Obs.# R Obs.# R L L Obs.# R 1 113 8 116 166 22 100 2 105 105 9 75 146 23 89 3 130 133 10 96 123 24 85 4 101 108 11 122 135 25 88 5 138 115 12 103 6 118 170 13 116 7 87 103 14 107 At 1% level of significance, can we conclude that these right-handed students found it easier to use the knobs with a right-hand thread? Use the following form of the difference: right-left. 1. Test Stat: L 137 2. Critical Region: a. T> 2.492 b. Tabs (2.492) c. T> abs (-2.492) d. T < -2.492 Obs.# R 15 118 16 103 17 111 18 104 19 111 147 20 89 87 21 78 145 78 107 84 148 112 93 76 L 116 78 101 123 3. Conclusion:…

a) Create a frequency table to organize the data b) Create a frequency histogram for the data ( 1. Write each column- Sum, Tally, Frequency     2. Give the frequency histogram)   c) State 2 any trends, patterns or observations in this data?    ( Describe each trend in detail )   d) What proportion, as a fraction, of the data has a value of 6 or less? e) What number of data has a value of 9 or greater? f) What percentage of the data has a value of 9 or greater?

Find the 5 number summary for the data shown 59 42 58 57 98 87 91 71 50 45 96 5 8 40 37 72 5 number summary:, , , , ,

Find the 5-number summary for the data shown 23 51 52 56 60 67 76 89 92 94 5 number summary:Find the lower fence:   Find the upper fence

Now consider a bag of ten colorful marbles. You reach into the bag 100 times. Each time you pull out a marble, write down what color it was, then put it back in the bag and do it again. You record the following data: Table describing marble frequency Color Frequency Red 22 Yellow 9 Green 41 Blue 28

A drink vendor randomly asked college students how many soft drinks they had consumed during the past week. Their answers were as follows: 5,0,2,1.1.9,0,1,0,3,1.1.4,3,4, and 7. a. Make a frequency table (NOT grouped). b. Make a histogram based on the frequency table. c. Make a frequency polygon based on the frequency table. d. Describe the shape of the histogram (i.e., mode?, skewed? etc.).

Which of these frequency counts would be represented by the smallest number of dots on a dot plot? A. 8 B. 9 C. 7 D. 6