Coin Flip Quizzes

Question 1

True/False

A value that is typical or representative of the data is referred to as a measure of central tendency or location.

Answer 1

True

Question 2

True/False

A sample statistic is a quantifiable characteristic of the population

Answer 2

False

Question 3

True/False

A parameter is a quantifiable characteristic of a sample.

Answer 3

False

Question 4

True/False

The mean is the sum of the quantitative observations divided by the total number of observations.

Answer 4

True

Question 5

True/False

For a set of data arranged or sorted in numerical order, the value of the observation in the middle is called the weighted mean.

Answer 5

False

Question 6

True/False

xtremely high or low scores affect the value of the median.

Answer 6

False

Question 7

True/False

The mode is the value of the observation that appears most frequently.

Answer 7

True

Question 8

True/False

The sum of the deviations from the mean for the set of numbers 4, 9 and 5 will equal zero.

Answer 8

True

Question 9

True/False

The variance is the sum of the squared deviations between each observation and the median divided by n.

Answer 9

False

Question 10

True/False

The standard deviation is the square root of the variance.

Answer 10

True

Question 11

True/False

For salaries of $102,000, $98,000, $15,000, $106,000 and $101,000, the mean would be an appropriate measure of central tendency or location.

Answer 11

False

Question 12

True/False

The standard deviation is the worst measure of variation.

Answer 12

False

Question 13

True/False

The range is the best measure of variation.

Answer 13

False

Question 14

True/False

If we find the deviation (difference) of each value from the median, the sum of these deviations is always zero.

Answer 14

False

Question 15

True/False

A population is a collection of all individuals, objects, or measurements of interest.

Answer 15

True

Question 16

True/False

A sample is a portion or subset of the population of interest.

Answer 16

True

Question 17

True/False

Based on a sample of 3,000 people, the civilian unemployment rate in the United States was 5.5%. 5.5% is referred to as a sample statistic.

Answer 17

True

Question 18

True/False

A time series plot (line graph) is used to depict cross-sectional data.

Answer 18

False

Question 19

True/False

Quantitative data is non-numerical data.

Answer 19

False

Question 20

True/False

A frequency distribution groups data into classes/categories/intervals showing the number of observations that fall in each class/category/interval.

Answer 20

True

Question 21

True/False

In general, we should construct a frequency distribution so that there are either 4 or 24 classes/categories/intervals.

Answer 21

False

Question 22

True/False

In developing a frequency distribution for quantitative data, the width of each interval can vary.

Answer 22

False

Question 23

True/False
The Union of Electrical Workers of America with 9,128 members polled/surveyed 362 members about a new wage package that will be submitted to management. The population is the 362 members.

Answer 23

False

Question 24

True/False

A bar chart for a qualitative frequency distribution is called a histogram.

Answer 24

False

Question 25

True/False

Political party would be considered qualitative data.

Answer 25

True

Question 26

True/False

A relative frequency distribution shows the number of observations in each class.

Answer 26

False

Question 27

True/False

The height of a bar in a histogram represents the number of observations for a class.

Answer 27

True

Question 28

True/False

To convert a frequency distribution to a relative frequency distribution, divide each interval frequency by the sum of the interval frequencies.

Answer 28

True