Foundations of Statistics : Concepts and Application of Statistics (Beginner Level)

1 Which of the following is NOT a measure of central tendency?

A Median 

B Mean

C Mode

D Standard Deviation

2 . In a normal, distribution approximately what percentage of data falls within one standard deviation of mean 

A 50%

B 75%

C 68%

D 95%

3 Which sampling method ensures every member of the population has an equal chance of being selected :

1 simple random sampling 

2 cluster sampling 

3 Systematic sampling 

4 stratified sampling 

C what is the probability of rolling a 3 on a fair six-sided die?

1 1/6

2 1/12

3 1/2

4 1/3 

5 In hypothesis testing ,what does the p-value represent?

1 The probability the null hypothesis is true

2 the probability of rejecting the null hypothesis

3 the confidence interval 

4 the probability of observing the data given the null hypothesis is true