WorksheetsMean of Frequency Distribution
Total questions: 10
Worksheet time: 10mins
It is assumed that the frequency of each interval is centred around its
mid point
lower limit
upper limit
none of the above
Given this data distribution...(check all that apply)
mean = median
mean is greater than the median
this data is skewed to the left
this data is skewed to the right
What is the mean mark for the above distribution?
4.4
4.45
4.5
4.55
What is the formula for mean of a frequency distribution?
nΣf
ΣfΣxf
ΣxΣxf
ΣxΣf
What is the calculation for mean?
214 ÷ 7
26 ÷ 214
214 ÷ 26
214 ÷ 49
Estimate the average hourly wage to the nearest dollar
$54.86
$54.00
$55.00
$54.85
The hourly wages for a group of workers is shown in the frequency table.
List the mid-point for each interval.
(a)
The data presented in the table have a mean value of:
172
161
157
184
The table shows the distribution of the number of hours worked each week (on average) for a sample of 100 community college students. The mean
50
34.6
20
36.8
This data represents the age distribution of a sample of 100 people covered by health insurance (private or government). The sample was taken in 2003. The mean of this data set is
52
25
44
32
