Reference no: EM13919428
Q1. For the data from the 1977 Stat. and Biom. 200 class for eye color, construct:
a. pie graph
b. horizontal bar graph
c. vertical bar graph
d. a frequency table with the relative frequency of each eye color
Eye Color Number of Students
Brown 11
Blue 10
Green 4
Gray 1
Q2. Which of the box plots on the graph has a large positive skew? Which has a large negative skew?
Q3. You recorded the time in seconds it took for 8 participants to solve a puzzle. These times appear below. However, when the data was entered into the statistical program, the score that was supposed to be 22.1 was entered as 21.2. You had calculated the following measures of central tendency: the mean, the median, and the mean trimmed 25%. Which of these measures of central tendency will change when you correct the recording error?
Time (seconds)
15.2
18.8
19.3
19.7
20.2
21.8
22.1
29.4
Q4. You know the minimum, the maximum, and the 25th, 50th, and 75th percentiles of a distribution. Which of the following measures of central tendency or variability can you determine?
mean, median, mode, trimean, geometric mean, range, interquartile range, variance, standard deviation
Q5. What is the mean number of correct responses of the participants after taking the placebo (0 mg/kg)?
Q6. What are the standard deviation and the interquartile range of the d0 condition?
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