The following series of numbers are students’ grades on an exam: Grades 10 99 51 94 77 90 77 77 88 82 80 Compute the mean. Compute the mode. Compute the median. The following data are the hourly wages for 8 members of a carpenters union and 8 members of a pipe fitters union. Carpenters Pipe Fitters $6.08 $9.55 5.50 7.80 5.45 5.90 5.31 4.25 5.20 4.08 5.10 3.88 4.88 3.61 4.80 3.25 For each union, calculate the range of wages. For each union, calculate the mean hourly wage. For each union, calculate the variance. For each union, calculate the standard deviation. What do the mean, range and standard deviation say about belonging to these unions? A test measuring an individual's desire to control the behavior of other persons (called Machiavellianism) was administered to a group of 18 business executives.The results of the test were listed in the form of a grouped frequency distribution as shown below (higher scores indicate greater desire to control the behavior of others): Class Intervals Machiavellianism Scores f 1-3 2 4-6 1 7-9 3 10-12 5 13-15 4 16-18 2 19-21 1 N 18 Compute the approximate mean of this distribution. Compute the approximate standard deviation of this distribution. Shown below is the distribution of response from 72 individuals on a variable indicating religious affiliation. Religion f Protestant 29 Catholic 13 Jew 9 Other 11 None 10 N 72 What type of variable is this? What measure of central tendency is appropriate for this variable and what is the value of that measure? What measure of variation is appropriate for this variable. Compute it.
- The following series of numbers are students’ grades on an exam:
Grades
10
99
51
94
77
90
77
77
88
82
80
- Compute the mean.
- Compute the mode.
- Compute the median.
- The following data are the hourly wages for 8 members of a carpenters union and 8 members of a pipe fitters union.
Carpenters Pipe Fitters
$6.08 $9.55
5.50 7.80
5.45 5.90
5.31 4.25
5.20 4.08
5.10 3.88
4.88 3.61
4.80 3.25
- For each union, calculate the range of wages.
- For each union, calculate the mean hourly wage.
- For each union, calculate the variance.
- For each union, calculate the standard deviation.
- What do the mean, range and standard deviation say about belonging to
these unions?
- A test measuring an individual's desire to control the behavior of other persons (called Machiavellianism) was administered to a group of 18 business executives.The results of the test were listed in the form of a grouped frequency distribution as shown below (higher scores indicate greater desire to control the behavior of others):
Class Intervals Machiavellianism Scores
f
1-3 2
4-6 1
7-9 3
10-12 5
13-15 4
16-18 2
19-21 1
N 18
- Compute the approximate mean of this distribution.
- Compute the approximate standard deviation of this distribution.
- Shown below is the distribution of response from 72 individuals on a variable indicating religious affiliation.
Religion f
Protestant 29
Catholic 13
Jew 9
Other 11
None 10
N 72
- What type of variable is this?
- What measure of central tendency is appropriate for this variable and what is the
value of that measure?
- What measure of variation is appropriate for this variable. Compute it.
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