# Need help with these 3 Multiple Choice Questions

• Jan 20th 2010, 10:02 PM
statsforlife
Need help with these 3 Multiple Choice Questions
1.
(Points: 1)
The researcher should use which type of sampling if the researcher wants to know characteristics of certain subgroups of the population.

1. simple random sampling
2. convenience sampling
3. orthogonal sampling
4. stratified random sampling

2.
(Points: 1)
A parameter is:

1. a value obtained by using information from all the individuals of the population
2. a sample statistic
3. a value obtained by using information from the individuals of a sample
4. a representative sample from a population

3.
Number
1-3
4-6
7-9
10-12
13-15
16-18
Frequency
16
22
27
55
30
22

The midpoint of the bottom class on the table is:
1. 22
2. 17.5
3. 16-18
4. 17
• Jan 20th 2010, 10:24 PM
statsforlife
Sorry one more question.

4.
(Points: 1)

Estimating a parameter for a population based on data from a sample is a type of:

1. inferential statistics
2. data set
3. descriptive statistics
4. census