A researcher is interested in understanding the online shopping habits of college students in the US. To answer this question, the researcher conducts a survey of 200 randomly selected college students from across the US. Of these 200 students, 138 of them (69%) reported that they regularly shop online.

The randomly selected college students across the US are an example of a _________.

Group of answer choices

Population

Sample

Parameter

Statistic

Flag question: Question 2

[example continued...]

A researcher is interested in understanding the online shopping habits of college students in the US. To answer this question, the researcher conducts a survey of 200 randomly selected college students from across the US. Of these 200 students, 138 of them (69%) reported that they regularly shop online.

The entire group of college students in the US is an example of a _________.

Group of answer choices

Parameter

Sample

Statistic

Population

Flag question: Question 3

[example continued...]

A researcher is interested in understanding the online shopping habits of college students in the US. To answer this question, the researcher conducts a survey of 200 randomly selected college students from across the US. Of these 200 students, 138 of them (69%) reported that they regularly shop online.

In this example, 200 would equal the _________.

Group of answer choices

Population size, N

Parameter

Sample size, n

Population

Flag question: Question 4Question 41 pts

[example continued...]

A researcher is interested in understanding the online shopping habits of college students in the US. To answer this question, the researcher conducts a survey of 200 randomly selected college students from across the US. Of these 200 students, 138 of them (69%) reported that they regularly shop online.

In this example, the total number of college students in the US would represent _________.

Group of answer choices

the sample

the sample size, n

a random sample

the population size, N

Flag question: Question 5Question 51 pts

[example continued...]

A researcher is interested in understanding the online shopping habits of college students in the US. To answer this question, the researcher conducts a survey of 200 randomly selected college students from across the US. Of these 200 students, 138 of them (69%) reported that they regularly shop online.

In this example, the 69% value reported by the randomly selected college students is an example of a _________.

Group of answer choices

Statistic

Sample

Population

Parameter

Flag question: Question 6Question 61 pts

[example continued...]

A researcher is interested in understanding the online shopping habits of college students in the US. To answer this question, the researcher conducts a survey of 200 randomly selected college students from across the US. Of these 200 students, 138 of them (69%) reported that they regularly shop online.

If the goal of the study is to discover what percentage of college students in the US regularly shop online, that number would be an example of a _________.

Group of answer choices

Parameter

Statistic

Population

Sample

Flag question: Question 7Question 71 pts

[example continued...]

A researcher is interested in understanding the online shopping habits of college students in the US. To answer this question, the researcher conducts a survey of 200 randomly selected college students from across the US. Of these 200 students, 138 of them (69%) reported that they regularly shop online.

In this example, the percentage of college students who regularly shop online is likely to differ between college students in the US versus the randomly selected college students in the study.

This difference is an example of _________.

Group of answer choices

Standard Deviation

Sampling Error

Standard Error

Average Deviation

Flag question: Question 8Question 81 pts

I'm interested in whether the time of day of watching lectures influences learning. To answer this question, I randomly selected 90 participants. Then I randomly assigned these participants into 3 conditions: In the Morning Condition, participants watched video lectures only in the morning. In the Afternoon Condition, participants watched video lectures only in the afternoon. In the Evening Condition, participants watched video lectures only in the Evening. Afterwards, I measured each conditions' learning on a test of the lecture material.

In this example, theindependent variable is ______________.

Group of answer choices

Random Assignment

Time of day of watching lectures

Afternoon Condition

Learning

Flag question: Question 9Question 91 pts

[example continued...]

I'm interested in whether the time of day of watching lectures influences learning. To answer this question, I randomly selected 90 participants. Then I randomly assigned these participants into 3 conditions: In the Morning Condition, participants watched video lectures only in the morning. In the Afternoon Condition, participants watched video lectures only in the afternoon. In the Evening Condition, participants watched video lectures only in the Evening. Afterwards, I measured each conditions' learning on a test of the lecture material.

In this example, the dependent variable is ______________.

Group of answer choices

Time of day of watching lectures

Afternoon Condition

Learning

Random Assignment

Flag question: Question 10Question 101 pts

[example continued...]

I'm interested in whether the time of day of watching lectures influences learning. To answer this question, I randomly selected 90 participants. Then I randomly assigned these participants into 3 conditions: In the Morning Condition, participants watched video lectures only in the morning. In the Afternoon Condition, participants watched video lectures only in the afternoon. In the Evening Condition, participants watched video lectures only in the Evening. Afterwards, I measured each conditions' learning on a test of the lecture material.

In this example, control is achieved by ______________.

Group of answer choices

Learning

Random Assignment

Time of day of watching lectures

Afternoon Condition

Flag question: Question 11Question 111 pts

[example continued...]

I'm interested in whether the time of day of watching lectures influences learning. To answer this question, I randomly selected 90 participants. Then I randomly assigned these participants into 3 conditions: In the Morning Condition, participants watched video lectures only in the morning. In the Afternoon Condition, participants watched video lectures only in the afternoon. In the Evening Condition, participants watched video lectures only in the Evening. Afterwards, I measured each conditions' learning on a test of the lecture material.

In this example, one of the conditions is ______________.

Group of answer choices

Afternoon Condition

Time of day of watching lectures

Learning

Random Assignment

Flag question: Question 12Question 121 pts

Manipulation and control are key components of a(n)

Group of answer choices

Association

Case Study

Experiment

Correlation

Flag question: Question 13Question 131 pts

A researcher classifies students by their eye color (e.g., brown, green, blue, hazel, grey, etc.). What scale of measurement is being used to classify the students?

Group of answer choices

Interval

Nominal

Ratio

Ordinal

Flag question: Question 14Question 141 pts

A researcher evaluates usage of the school cafeteria by evaluating the sales (in exact dollars and cents) of particular food and drink items. What scale of measurement is being used to measure usage of the school cafeteria?

Group of answer choices

Nominal

Ordinal

Ratio

Flag question: Question 15Question 151 pts

A video player has 3 video quality settings: "low', "medium" or "high". What scale of measurement is being used to classify video quality?

Group of answer choices

Nominal

Ratio

Ordinal

Interval

Flag question: Question 16Question 161 pts

Which of the following is an example of a continuous variable?

Group of answer choices

The number of male students in a Nursing class.

The number of chocolates in a box of chocolates.

The exact weight of a car.

The number of pets in a household.

Flag question: Question 17Question 171 pts

What is the firststep to be performed in the following mathematical expression, (X-3)²?

Group of answer choices

Square the summed scores

sum the squared scores

subtract 3 from each score

Square each score

Flag question: Question 18Question 181 pts

What is the value of (X)² for the scores 7, 3, 6?

Group of answer choices

3

16

94

256

Flag question: Question 19Question 191 pts

What is the value of X² for the scores 7, 3, 6?

Group of answer choices

3

16

94

256

Flag question: Question 20Question 201 pts

For the following frequency table:

X	f
5	5
4	5
3	2
2	3
1	5

How many people (n) were there?

Group of answer choices

5

25

15

20

Flag question: Question 21Question 211 pts

[example continued...]

For the following frequency table:

X	f
5	5
4	5
3	2
2	3
1	5

What is the relative frequency (proportion) of the score X = 1?

Group of answer choices

.25

1

.50

5

Flag question: Question 22Question 221 pts

[example continued...]

For the following frequency table:

X	f
5	5
4	5
3	2
2	3
1	5

What is X for this frequency distribution table? (hint: 5 people scored X = 5)

Group of answer choices

5

62

15

55

Flag question: Question 23Question 231 pts

The key difference between a positively skewed distribution and a negatively skewed distribution is

Group of answer choices

the height of the peak

whether the long tail is on the right or left side

how symmetrical the scores are

the height of the tails

Flag question: Question 24Question 241 pts

The ______ is a measure of central tendency.

Group of answer choices

Sum of squares

Range

Mode

Standard deviation

Flag question: Question 25Question 251 pts

For the following scores, [7,4,4,3,3,3] the mode equals

Group of answer choices

3

3.5

4

6

Flag question: Question 26Question 261 pts

[example continued...]

For the following scores, [7,4,4,3,3,3] the medianequals

Group of answer choices

6

3.5

3

4

Flag question: Question 27Question 271 pts

[example continued...]

For the following scores, [7,4,4,3,3,3] the meanequals

Group of answer choices

4

3.5

6

3

Flag question: Question 28Question 281 pts

[example continued...]

For the following scores, [7,4,4,3,3,3] the Sum of Squares (SS)equals

Group of answer choices

12

108

6

576

Flag question: Question 29Question 291 pts

[example continued...]

If the following scores are population data, [7,4,4,3,3,3] the Population Varianceequals

Group of answer choices

2.4

1.55

1.41

2

Flag question: Question 30Question 301 pts

[example continued...]

If the following scores are population data, [7,4,4,3,3,3] the Population Standard Deviationequals

Group of answer choices

1.55

2

2.4

1.41

Flag question: Question 31Question 311 pts

[example continued...]

If the following scores are sample data, [7,4,4,3,3,3] theSample Variance equals

Group of answer choices

1.55

2.4

1.41

2

Flag question: Question 32Question 321 pts

[example continued...]

If the following scores are sample data, [7,4,4,3,3,3] theSample Standard Deviationequals

Group of answer choices

1.41

1.55

2

2.4

Flag question: Question 33Question 331 pts

What is the range for the following set of scores?

Scores: 4, 6, 11, 20

Group of answer choices

4

41

16

5

Flag question: Question 34Question 341 pts

What is the z score for X =100, = 90, = 5?

Group of answer choices

-5.00

-2.00

+2.00

+5.00

Flag question: Question 35Question 351 pts

What is the x score for z =+3.00, = 10, = 3?

Group of answer choices

12

42

19

9

Flag question: Question 36Question 361 pts

Sophia's Test Blake's Test

Sophia's Score: 85 Blake's Score: 88

Class Average: 80 Class Average: 86

Standard Deviation: 4 Standard Deviation: 2

Sophia's z score =

Group of answer choices

+1.00

+3.00

+2.00

+1.25

Flag question: Question 37Question 371 pts

[example continued...]

Sophia's Test Blake's Test

Sophia's Score: 85 Blake's Score: 88

Class Average: 80 Class Average: 86

Standard Deviation: 4 Standard Deviation: 2

Blake's z score =

Group of answer choices

+3.00

+1.25

+1.00

+2.00

Flag question: Question 38Question 381 pts

[example continued...]

Sophia's Test Blake's Test

Sophia's Score: 85 Blake's Score: 88

Class Average: 80 Class Average: 86

Standard Deviation: 4 Standard Deviation: 2

According to their z scores, who's score was more impressive?

Group of answer choices

Sophia

z scores do not provide this information

They were equally impressive

Blake

Flag question: Question 39Question 391 pts

[example continued...]

Sophia's Test Blake's Test

Sophia's Score: 85 Blake's Score: 88

Class Average: 80 Class Average: 86

Standard Deviation: 4 Standard Deviation: 2

Convert Sophia's score into a score on Blake's test:

Group of answer choices

87

90

84

88.5

Flag question: Question 40Question 401 pts

[example continued...]

Sophia's Test Blake's Test

Sophia's Score: 85 Blake's Score: 88

Class Average: 80 Class Average: 86

Standard Deviation: 4 Standard Deviation: 2

Convert Blake's score into a score on Sophia's test:

Group of answer choices

84

87

88.5

90