Reference no: EM132731202

Questions -

Q1) An auto analyst is conducting a satisfaction survey, sampling from a list of 10,000 new car buyers. The list includes 2,500 Ford buyers, 2,500 GM buyers, 2,500 Honda buyers, and 2,500 Toyota buyers. The analyst selects a sample of 400 car buyers, by randomly sampling 100 buyers of each brand. This is an example on:

A) Simple Random Sampling

B) Systematic Sampling

C) Stratified Sampling

D) Cluster Sampling

Q2) The quality assurance (QAU) unit at FBSU is planning to study the mean GPA of the students graduated in the last year. The University has four colleges: Business, Computing, Engineering, and Sciences and Humanities. The QAU selects a random sample of 100 students from the graduated students for the last year. This is an example on:

A) Simple Random Sampling

B) Systematic Sampling

C) Stratified Sampling

D) Cluster Sampling

Q3) The mean score in a statistics exam of 3 students is 72.4. If the fourth student has scored 80, what is the mean score of the four students?

A) 74.30

B) 76.30

C) 74.93

D) 73.92

Q4) Which of the following can have more than one value in a data set?

A) Mode

B) Standard deviation

C) Mean

D) Median

Q5) Compute the coefficient of variation if the mean of the set of data is 20 and the variance is 16.

A) 0.80

B) 5.00

C) 0.20

D) 1.25

Q6) The average score of a class of 35 students is 76. If the mean score of the 15 female students is 74, what is the male student score average?

A) 78.7

B) 77.5

C) 76.8

D) 75.0