BUS 308 Week 1 Quiz

1.

Question :

Technically, “statistic” refers to which?

Student Answer:

 A sample characteristic

 A measure of variability

 A population characteristic

 A particular scale of data

Instructor Explanation:

Answer found in section 1.2 The Notation, in Statistics for Managers,
 

Question 2.

Question :

The tails of a normal distribution never touch the abscissa.

True

False

Question 3.

Question :

The z-score indicates where an individual data value lies within the data set

True

False

Question 4.

Question :

Which statement explains what inferential statistical analysis is? 

 The process of describing the sample.

 Understanding the population through the sample.

 The accumulation of population characteristics.

 Comparing dissimilar samples.

Question 5.

Question :

A parameter refers to a sample characteristic

.True

False

Question 6.

Question :

In statistical notation, M is to μ as s is to σ.

True

False

Question 7.

Question :

Which of the following defines standard deviation?

Student Answer:

 The difference between the highest and lowest values.

 The arithmetic average of a set of values.

 The average difference between a set of values and the mean.

 The average of the highest and lowest values in a set.

Question 8.

Question :

Which of the following is NOT a measure of variability?
@Answer found in section 1.5 Descriptive Statistics, in Statistics for Managers

 The standard deviation

 The range

 The variance

 The median

Question 9.

Question :

In a frequency distribution such as a bell-shaped curve, what does the vertical height of the curve indicate?

Student Answer:

 The different score values

 The frequency of score occurrence

 The probability of score occurrence

 The normality of the distribution

Instructor Explanation:

Answer found in section 2.1 A Primer in Probability, in Statistics for Managers

Question 10.

Question :

A probability is found by dividing the number of possible outcomes (o) by the number of successes € = o/e.

True

False