WorksheetsCHAPTER 4_MEASURE OF DISPERSION AND SKEWNESS
Total questions: 15
Worksheet time: 22mins
Which of the following is not a measure of dispersion?
range
variance
standard deviation
mode
The heights of some students are given.
158cm 172cm 164cm
164cm 167cm 159cm
What is the range of the heights?
13cm
14cm
164cm
330cm
Determine the value of x in the cumulative frequency table below.
10
11
12
13
State the midpoint of the class interval (3.8 – 5.2).
3.8
4.5
4.6
5.2
Which of the following class interval has a midpoint 145.5?
140-149
140-150
141-149
141-150
Which of the following is not true?
Size of the class is 4
For the class interval 25 - 29, the lower limit is 25
For the class interval 30 - 34, the upper boundary is 34.5
For the class interval 35 - 39, the midpoint is 37
Which histogram does not show the correct distribution shape?
Find the value of x.
3
4
5
6
Calculate the mean.
14.4
16.4
17
18.4
If the dispersion is small, then the values in the distribution is close to the median.
true
false
If two data sets have the same mean, then these sets also have the same standard deviations.
true
false
The data in the picture:
is negatively skewed
positively skewed
symmetrical
The data in the picture:
is negatively skewed
positively skewed
symmetrical
The data in the picture:
is negatively skewed
positively skewed
symmetrical
