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[Solved] MATH221 Assignments Week 1: Quiz

Score for this attempt: 34 out of 36
Submitted Mar 3 at 11:46pm
This attempt took 49 minutes.

Question 1

2 / 2 pts
(CO 1) Among 500 people at the concert, a survey of 35 found 28% found it too loud. What is the population and what is the sample?

Population: all concert goers; Sample: the 500 at that concert

Population: all concert goers; Sample: the 28% who found it too loud

Population: 500 at that concert; Sample: the 35 in the survey

Population: 500 at that concert; Sample: the 28% who found it too loud

Question 2

2 / 2 pts
(CO 1) The measurements of 100 products from the assembly line show that 99% are correct. Is this percentage a parameter or a statistic and why?

Parameter as it represents the population

Statistic as it represents the sample

Parameter as it represents the sample

Statistic as it represents the population

Question 3

0 / 2 pts

(CO 1) Classify the data of all the political parties in the world.

Quantitative

Qualitative

Statistics

Classical

Question 4

2 / 2 pts
(CO 1) The data set that lists the temperatures in Albany, NY each day in the month of February would be classified as what type of data?

Ordinal

Nominal

Ratio

Interval

Question 5

2 / 2 pts
(CO 1) A data set that includes the years in which your hometown team won championships would be classified as what type of data?

Interval

Ordinal

Nominal

Ratio

Question 6

2 / 2 pts
(CO 1) What type of data collection might be best to estimate the amount of time individuals spend socializing?

Observational

Experiment

Simulation

Survey

Question 7

2 / 2 pts
(CO 1) What type of data collection might be best to study the effect of a terror attack on a city’s electrical system?

Simulation

Experiment

Survey

Observational

Question 8

2 / 2 pts
(CO 1) You need to study the satisfaction of customers of a specific restaurant. You ask every 10th customer as they leave after their meal. This would most closely describe which type of sampling technique?

Random

Convenience

Systematic

Stratified

Question 9

2 / 2 pts
(CO 2) Which of the following graphs would be a Pareto chart?

This graph shows 6 contiguous vertical bars with height generally decreasing from left to right.

This graph shows a series of 9 vertical bars with gaps in between.  The bars are arranged in order by height with the tallest bar on the left and the shortest bar on the right.

This graph shows a series of nine vertical bars.  There are gaps between the bars.   These bars are not sorted in any way. The taller bars and the shorter bars are randomly spread across the graph from left to right.

This graph shows 6 horizontal bars with the lengths of the bars generally decreasing from bottom to top.

Question 10

2 / 2 pts
(CO 1) Based onpoll, we estimate that Mickey Mouse will receive 25% of the vote in the most popular cartoon character contest. This is an exampleof:

A pareto chart

Descriptive statistics

Qualitative data

Inferential statistics

Descriptive and inferential statistics

Question 11

2 / 2 pts
(CO 1) Which of the following graphs would be considered normally distributed?

This is a histogram with 6 bars.  The tallest bars are on the far-right side of the gird. The bars decrease in height going from right to left with the shortest bars on the far left.

This is a histogram with 5 bars.  The tallest bar is in the middle. The height of the bars decreases on either side symmetrically with the smallest bars on the far left and far right.

This is a histogram with 6 bars.  The tallest bars are on the far-left side of the gird. The bars decrease in height going from left to right with the shortest bars on the far right.

This graph is a histogram with 6 bars all of the same height.

Skewness

Question 12

2 / 2 pts
(CO 1) Which graph would be best to display the percentage of movie releases by genre?

Histogram

Pie chart

Scatter plot

Line plot

Pie charts

Question 13

2 / 2 pts
(CO 1) Which of the following would be the standard deviation for this sample data set: 5, 7, 3, 9, 2, 4, 4, 6, 5, 9, 3?

5.18

2.25

2.36

2.59

Question 14

2 / 2 pts
(CO 1) What would be the mean of this data set: 8, 9, 7, 244, 7, 1, 5, 3, 4?

5.5

32.0

16.0

75.0

Question 15

2 / 2 pts
(CO 1) A researcher wants to study the effects of playing video games 24-7 for a week. What type of study would be best suited to make this determination?

Simulation

Survey

Observational

Experimental

Question 16

2 / 2 pts
(CO 1) To gather information on customer satisfaction, a researcher randomly selects four store locations and interviews all the customers at those selected stores. This sampling technique is called:

Cluster

Convenience

Random

Stratified

Question 17

2 / 2 pts
(CO 1) A sales manager wants to create a graph that displays the sales figures for each month for the last 12 months. Which of the following graphs might be most effective to use?

Scatter plot

Pareto chart

Pie chart

Line chart

Question 18

2 / 2 pts

(CO 1) What is the mode of the following data set?

2, 2, 3, 3, 3, 4, 4, 5, 5, 6, 7, 7, 7

3

7
3 and 7

2, 3, 4, 5, 6, and 7
Quiz Score: 34 out of 36
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