Statistics Exam 1 Review

Determine the upper class boundary for the fourth class.

0.565

Select the graph that best illustrates the following distribution shape: Symmetrical

bottom right

Determine whether the statement describes a descriptive or inferential statistic. 66% of all students at the local university voted in the last election.

descriptive statistic

When people with more neutral opinions on a subject choose not to participate in a survey, this is known as .

nonresponse bias

Determine whether an observational or experimental study is appropriate to address the following statement. A car wash operator wants to study if her customer base is shrinking.

observational

Entering data into incorrect fields in a data set is an example of

processing errors

Types of cars people own are an example of which type of data?

qualitative

Indicate the level of measurement for the data set described. Number of calories in each item on a menu

ratio

One form of BLANK is in the wording of survey questions a researcher has given to participants.

researcher bias

If a participant cannot remember the correct answer to a question and simply comes up with one, this is known as .

response bias

Determine if the numerical value describes a parameter or a statistic. A survey of 3159 people in the U.S. revealed that 73% of those surveyed are self-conscious about their weight.

sample statistic

An experiment in which only the partaker does not realize whether they received a placebo or treatment is .

single-blind

For the set of data displayed below, describe the most likely shape of its distribution.

skewed to the right

First, the population is subdivided by city. Then a political strategist uses a random number generator to select fifteen members from each city to study.

stratified sampling

Determine the relative frequency for the second class as a simplified fraction.

10/43

Determine the cumulative frequency for the second class.

13

Find the number of nonfiction books sold each month. Round your answer to the nearest integer.

160

Find the number of romance books sold each month. Round your answer to the nearest integer.

160

How many orders did the company ship between 185 and 186 pounds?

17

Was the average weight for this sample of orders closer to 185 pounds or 186 pounds?

185

What was the most common order weight?

185.2

Find the number of computer books sold each month. Round your answer to the nearest integer.

221

Determine the cumulative frequency for the third class.

26

Find the lowest per capita personal income for the six states shown.

26,982

Determine the relative frequency for the fourth class as a simplified fraction.

3/43

Find the lower class boundary for the second class.

30.5

Find the highest per capita personal income for the six states shown.

32,779

Find the number of mystery books sold each month. Round your answer to the nearest integer.

343

Find the number of travel books sold each month. Round your answer to the nearest integer.

346

Find the value that should be written at the location indicated by the [?] on the vertical axis of the graph.

4

Determine the missing value on the vertical axis represented by [?].

40,000

Find the upper class boundary for the fourth class.

42.5

Find the value that should be written at the location indicated by the [?] on the horizontal axis of the graph.

42.5

Determine the missing value on the vertical axis represented by [?].

44,000

Determine the number of scores between 49.5 and 89.5

48

Determine the lower class boundary for the second class.

57.5

Choose the interval that contains the score, 60.3

58 - 65

Determine the upper class boundary for the third class.

73.5

Determine the class width of each class.

8

When many participants in a study have strong opinions, could occur.

Participation bias

The annual salaries of all the parents of your classmates

Population

Identify the sampling technique used for the following study. A scientist chooses thirty members of the sampling frame at random from each neighborhood.

Stratified sampling

Determine the lower class boundary for the fourth class.

0.475

Favoritism, partiality, and preconceived notions are types of

Bias

Uniform

Bottom right

Identify the sampling technique used for the following study. Select each member of the population.

Census

A statistics student interviews each member from each of the fifteen randomly chosen zoning districts in a town.

Cluster sampling

Classify the following graph as a cross-sectional study or a time-series study.

Cross-sectional study

If a participant begins a study but fails to complete it, then that participant is a(n) .

Dropout

Indicate the level of measurement for the data set described. Temperature (in degrees Fahrenheit) of apartment thermostats in an apartment complex

Interval

Classify the following scenario as a meta-analysis or a case study. A disaster planner studies fifteen weather reports from hurricanes to compare for common factors.

Meta-analysis

A subject who finished the study but did not follow the directions they were given is called a(n) .

Nonadherent

If a study of all college students at a particular college resulted in only freshmen being sampled, this would be considered

Sampling bias

Classify the following graph as a cross-sectional study or a time-series study.

Time-series study

Select the graph that best illustrates the following distribution shape: Skewed to the left

Top left