Statistics

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1.       A data  set of 50 comprehension scores ( named Comprehension Score)  Answer  the following questions and/or complete the following tasks.
 
A. Create a frequency distribution and a histogram for the set.
 
b. why did you select the class interval you used?
 
c. Is this distribution skewed? How do you know?
 
 
 
2.       Here is a frequency distribution.  Create a histogram either by hand or by using some other application such as excel.
 
class interval
frequency
90-100
12
80-89
14
70-79
20
60-69
24
50-59
28
40-49
29
30-39
21
20-29
15
10-19
17
0-9
12
 
 
 
3.       A third grade teacher is looking to improve her students’ level of engagement during group discussions and instruction.  She keeps track of each of the 15 thirdgraders’ number of responses every day  for 1 week, and it is available as chapter 4 data set 2, Us SPSS to create a bar chart (one bar for each day)
 
 
 
4.       For each of the following, indicate whether you would use a pie, line, or bar chart and why.
 
 
 
a.       The proportion of freshman, sophomores, juniors and seniors in a particular university
 
b.      Change in GPA over four semesters
 
c.       Number of applicants for four different jobs
 
d.      Reaction time to different stimuli
 
e.      Number of scores in each of 10 categories
 
5.       Provide an example of when you might use each of the following types of charts.  For example, you would use a pie chart to show the proportion of children in grades through 6 who receive a reduced price lunch. 
 
a.       Line
 
b.      Bar
 
c.       Pie
 
6.       Create the worst looking chart that you can, crowded with chart and font junk. There’s nothing that has as lasting an impression as a bad example.
 
 
 

 

 
    • 12 years ago
    • 5
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