Question 1

In a positively skewed uni-modal distribution, how are the three measures of central tendency most likely arranged??

Accepted Answer

A)  Median > mode > mean. 
B)  Mode > median > mean. 
C)  Mean > median > mode. 
D)  Mean > mode > median. 
A)  Median > mode > mean. 
B)  Mode > median > mean. 
C)  Mean > median > mode. 
D)  Mean > mode > median.

Question 2

Which of the following is false of a normal distribution?

Accepted Answer

A)  The mean, median, and mode very close. 
B)  There can be outliers, but only on one side of the center. 
C)  The distribution is symmetrical around the center. 
D)  All of the above are true statements about a normal distribution. 
A)  The mean, median, and mode very close. 
B)  There can be outliers, but only on one side of the center. 
C)  The distribution is symmetrical around the center. 
D)  All of the above are true statements about a normal distribution.

Question 3

The exact midpoint of the data is the median.

Accepted Answer

A) True 
 B)False

Question 4

In a data set where you have one extreme outlier, only the mean is influenced.

Accepted Answer

A) True 
 B)False

Question 5

If you have a dataset, and you add 5 to each datapoint, what is likely to occur?

Accepted Answer

A)  The mean will be 5 units larger 
B)  The mean will change but not systematically 
C)  All three measures of central tendency will be 5 units larger 
D)  None of the above. 
A)  The mean will be 5 units larger 
B)  The mean will change but not systematically 
C)  All three measures of central tendency will be 5 units larger 
D)  None of the above.

Question 6

The three measures of central tendency are not appropriate for any type of measurement scale. Identify what measurement scale is appropriate for each measure of central tendency

Accepted Answer

The mean can be used on interv

Question 7

A researcher who is examining stress-related hormones has data on indivdiuals' body mass index. Below are the data
 $$\begin{array} { c c } 
\hline \text { BMI } & f \
\hline 18 & 4 \
19 & 11 \
20 & 6 \
21 & 24 \
22 & 39 \
23 & 33 \
24 & 35 \
25 & 39 \
26 & 41 \
27 & 36 \
28 & 22 \
29 & 16 \
30 & 19 \
\hline
\end{array}$$ What is the most common body mass index in this sample?

Accepted Answer

The answer of A researcher who is examining stress-related hormones...

Question 8

The mean is also the…

Accepted Answer

A)  sum 
B)  arithmetic average. 
C)  the most frequent response. 
D)  the exact mid point (i.e., center) of the data set after ranking it in cardinal order. 
A)  sum 
B)  arithmetic average. 
C)  the most frequent response. 
D)  the exact mid point (i.e., center) of the data set after ranking it in cardinal order.

Question 9

The following data represent the number of children people have.
$\begin{array}{cc}
\hline  \text {  Number of } &  \
 \text {Kids  } &\
\hline 2 \
1 \
4 \
3 \
3 \
2 \
4 \
1 \
1 \
1 \
2 \
3 \
1 \
4 \
2 \
3 \
2 \
1 \
5 \
1 \
2 \
3 \
1 \
1 \
\hline
\end{array}$
 What is the mode?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 10

Skewed distributions causes outliers in datasets.

Accepted Answer

A) True 
 B)False

Question 11

How many minutes of television do children watch at home? A researcher surveyed parents and asked them to report the number of minutes per day children spend watching tv. The data are below
 $\begin{array}{llcc}
 \hline \text {Minutes on  } &  \
 \text { TV } &\
\hline 55 \
80 \
75 \
90 \
120 \
40 \
30 \
20 \
60 \
40 \
50 \
120 \
80 \
50 \
60 \
40 \
40 \
50 \
70 \
40 \
\hline
\end{array}$
 What is the median?

Accepted Answer

The answer of How many minutes of television do children...

Question 12

The mode of a data set is the…

Accepted Answer

A)  the exact mid point (i.e., center) of a rank ordered dataset 
B)  The sum of the data points. 
C)  the largest data point subtract the smallest data point. 
D)  the most frequently observed response. 
A)  the exact mid point (i.e., center) of a rank ordered dataset 
B)  The sum of the data points. 
C)  the largest data point subtract the smallest data point. 
D)  the most frequently observed response.

Question 13

How many minutes of television do children watch at home? A researcher surveyed parents and asked them to report the number of minutes per day children spend watching tv. The data are below
 $\begin{array}{llcc}
 \hline \text {Minutes on  } &  \
 \text { TV } &\
\hline 55 \
80 \
75 \
90 \
120 \
40 \
30 \
20 \
60 \
40 \
50 \
120 \
80 \
50 \
60 \
40 \
40 \
50 \
70 \
40 \
\hline
\end{array}$
 What is the mode?

Accepted Answer

The answer of How many minutes of television do children...

Question 14

A negatively skewed distribution has a longer tail to the left of the center.

Accepted Answer

A) True 
 B)False

Question 15

A bi-modal distribution is characterized by the median and mean being located between two modes

Accepted Answer

A) True 
 B)False

Question 16

A researcher is running an experiment with two conditions. One in which she asks participants to bite into an apple when remembering a list of words to prevent them from rehearsing the words (i.e., saying them aid memory) and another group where they do not bite into an apple. Below are the data showing the number of words participants were able to recall out of 30.
 $$\begin{array} { c c c c } 
\hline \text { Bite } & f & \text { NoBite } & f \
\hline 5 & 11 & 5 & 4 \
6 & 8 & 6 & 5 \
7 & 14 & 7 & 6 \
8 & 12 & 8 & 14 \
9 & 15 & 9 & 13 \
10 & 16 & 10 & 12 \
11 & 5 & 11 & 15 \
12 & 6 & 12 & 8 \
13 & 3 & 13 & 4 \
14 & 2 & 14 & 9 \
15 & 1 & 15 & 2 \
16 & 0 & 16 & 0 \
17 & 0 & 17 & 1 \
\hline
\end{array}$$ What was the median of each group?

Accepted Answer

Biting an

Question 17

When reporting a mean in APA format, the correct way to represent the mean is with which symbol?

Accepted Answer

A)  x? 
B)  $\Sigma$x 
C)  M 
D)  Any of the above is acceptable according to the APA guidelines. 
A)  x? 
B)  $\Sigma$x 
C)  M 
D)  Any of the above is acceptable according to the APA guidelines.

Question 18

In a unimodal distribution where the mean is much greater than the median and the mode. What which of the following is the distribution of the data more likely to resemble?

Accepted Answer

A)  Negatively skewed 
B)  Positively skewed 
C)  Normally distributed 
D)  Uniformly distributed 
A)  Negatively skewed 
B)  Positively skewed 
C)  Normally distributed 
D)  Uniformly distributed

Question 19

50% of the data points are larger than the median, and 50% of the datapoints are less than the median

Accepted Answer

A) True 
 B)False

Question 20

For which of the following datasets would a mean not be useful?

Accepted Answer

A)  The number of minutes students spend daydreaming in class 
B)  Individuals' favorite music artist 
C)  The number of words a group of toddlers know 
D)  None of the above 
A)  The number of minutes students spend daydreaming in class 
B)  Individuals' favorite music artist 
C)  The number of words a group of toddlers know 
D)  None of the above

In a positively skewed uni-modal distribution, how are the three measures of central tendency most likely arranged??

Which of the following is false of a normal distribution?

The exact midpoint of the data is the median.

In a data set where you have one extreme outlier, only the mean is influenced.

If you have a dataset, and you add 5 to each datapoint, what is likely to occur?

The three measures of central tendency are not appropriate for any type of measurement scale. Identify what measurement scale is appropriate for each measure of central tendency

A researcher who is examining stress-related hormones has data on indivdiuals' body mass index. Below are the data BMI f 18 4 19 11 20 6 21 24 22 39 23 33 24 35 25 39 26 41 27 36 28 22 29 16 30 19 What is the most common body mass index in this sample?

The mean is also the…

The following data represent the number of children people have. Number of Kids 2 1 4 3 3 2 4 1 1 1 2 3 1 4 2 3 2 1 5 1 2 3 1 1 What is the mode?

Skewed distributions causes outliers in datasets.

How many minutes of television do children watch at home? A researcher surveyed parents and asked them to report the number of minutes per day children spend watching tv. The data are below Minutes on TV 55 80 75 90 120 40 30 20 60 40 50 120 80 50 60 40 40 50 70 40 What is the median?

The mode of a data set is the…

How many minutes of television do children watch at home? A researcher surveyed parents and asked them to report the number of minutes per day children spend watching tv. The data are below Minutes on TV 55 80 75 90 120 40 30 20 60 40 50 120 80 50 60 40 40 50 70 40 What is the mode?

A negatively skewed distribution has a longer tail to the left of the center.

A bi-modal distribution is characterized by the median and mean being located between two modes

When reporting a mean in APA format, the correct way to represent the mean is with which symbol?

In a unimodal distribution where the mean is much greater than the median and the mode. What which of the following is the distribution of the data more likely to resemble?

50% of the data points are larger than the median, and 50% of the datapoints are less than the median

For which of the following datasets would a mean not be useful?

Introduction: Statistics--Who Needs Them

Types of Data

A Picture Is Worth a Thousand Words: Creating and Interpreting Graphics

Variability: the Law of Life

Where Am I Normal Distributions and Standard Scores

Basic Probability Theory

The Central Limit Theorem and Hypothesis Testing

The Z-Test

The T-Test

Analysis of Variance

Confidence Intervals and Effect Size: Building a Better Mousetrap

Correlation and Regression: Are We Related

The Chi-Square Test

Non-Parametric Tests

Which Test Should I Use and Why

Filters

Exam 4: Measures of Central Tendency: Whats so Average About the Mean

In a positively skewed uni-modal distribution, how are the three measures of central tendency most likely arranged??

Which of the following is false of a normal distribution?

The exact midpoint of the data is the median.

In a data set where you have one extreme outlier, only the mean is influenced.

If you have a dataset, and you add 5 to each datapoint, what is likely to occur?

The three measures of central tendency are not appropriate for any type of measurement scale. Identify what measurement scale is appropriate for each measure of central tendency

A researcher who is examining stress-related hormones has data on indivdiuals' body mass index. Below are the data BMI f 18 4 19 11 20 6 21 24 22 39 23 33 24 35 25 39 26 41 27 36 28 22 29 16 30 19 What is the most common body mass index in this sample?

The mean is also the…

The following data represent the number of children people have. Number of Kids 2 1 4 3 3 2 4 1 1 1 2 3 1 4 2 3 2 1 5 1 2 3 1 1 What is the mode?

Skewed distributions causes outliers in datasets.

How many minutes of television do children watch at home? A researcher surveyed parents and asked them to report the number of minutes per day children spend watching tv. The data are below Minutes on TV 55 80 75 90 120 40 30 20 60 40 50 120 80 50 60 40 40 50 70 40 What is the median?

The mode of a data set is the…

How many minutes of television do children watch at home? A researcher surveyed parents and asked them to report the number of minutes per day children spend watching tv. The data are below Minutes on TV 55 80 75 90 120 40 30 20 60 40 50 120 80 50 60 40 40 50 70 40 What is the mode?

A negatively skewed distribution has a longer tail to the left of the center.

A bi-modal distribution is characterized by the median and mean being located between two modes

When reporting a mean in APA format, the correct way to represent the mean is with which symbol?

In a unimodal distribution where the mean is much greater than the median and the mode. What which of the following is the distribution of the data more likely to resemble?

50% of the data points are larger than the median, and 50% of the datapoints are less than the median

For which of the following datasets would a mean not be useful?

Introduction: Statistics--Who Needs Them

Types of Data

A Picture Is Worth a Thousand Words: Creating and Interpreting Graphics

Variability: the Law of Life

Where Am I Normal Distributions and Standard Scores

Basic Probability Theory

The Central Limit Theorem and Hypothesis Testing

The Z-Test

The T-Test

Analysis of Variance

Confidence Intervals and Effect Size: Building a Better Mousetrap

Correlation and Regression: Are We Related

The Chi-Square Test

Non-Parametric Tests

Which Test Should I Use and Why

Filters