Question 1

Given the following test scores, what score represents the median? 92, 92, 73, 68, 80, 91, 82, 86, 92, 94, 95, 96, 97.

Accepted Answer

A)  68 
B)  87 
C)  92 
D)  97 
A)  68 
B)  87 
C)  92 
D)  97

Question 2

The statistical symbol '∑' represents the

Accepted Answer

A)  sum of. 
B)  total number of subjects. 
C)  mean. 
D)  standard deviation. 
A)  sum of. 
B)  total number of subjects. 
C)  mean. 
D)  standard deviation.

Question 3

A score at the mean of the normal distribution represents a stanine of

Accepted Answer

A)  0. 
B)  1. 
C)  5. 
D)  10. 
A)  0. 
B)  1. 
C)  5. 
D)  10.

Question 4

A score at -1 standard deviation represents a percentile rank of approximately

Accepted Answer

A)  2%. 
B)  16%. 
C)  34%. 
D)  68%. 
A)  2%. 
B)  16%. 
C)  34%. 
D)  68%.

Question 5

Garrett did a survey to determine the favorite sport of fourth grade children in Williamstown. Which of the following is the appropriate measure of central tendency for his data?

Accepted Answer

A)  Mode 
B)  Standard deviation 
C)  Mean 
D)  Median 
A)  Mode 
B)  Standard deviation 
C)  Mean 
D)  Median

Question 6

Given the following scores on a midterm exam 72, 89, 91, 90, 100, 68, 80,76, 78,94,94,90,84,86,88,87,92,96,74,93, find the best answer to the following questions.
-Describe the distribution of the scores.

Accepted Answer

A)  The distribution approximates the normal distribution. 
B)  the distribution is trimodal. 
C)  the distribution is negatively skewed. 
D)  the distribution is positively skewed. 
A)  The distribution approximates the normal distribution. 
B)  the distribution is trimodal. 
C)  the distribution is negatively skewed. 
D)  the distribution is positively skewed.

Question 7

The median of the following distribution 1,2,4,4,5,5,5,6,6,8,9 is:

Accepted Answer

A)  2. 
B)  4. 
C)  5. 
D)  6. 
A)  2. 
B)  4. 
C)  5. 
D)  6.

Question 8

Given the following set of scores: 6,7,5,12,11,9,9,7,6,10,6. The score that best represents the range is:

Accepted Answer

A)  6. 
B)  7. 
C)  9. 
D)  10. 
A)  6. 
B)  7. 
C)  9. 
D)  10.

Question 9

Given the following set of scores: 6,7,5,12,11,9,9,7,6,10,6. The score that best represents the median is:

Accepted Answer

A)  6. 
B)  7. 
C)  9. 
D)  10. 
A)  6. 
B)  7. 
C)  9. 
D)  10.

Question 10

Francis wants to present the average mathematics score attained by the participants in her study. She needs to report a measure of

Accepted Answer

A)  dispersion index. 
B)  variability. 
C)  central tendency. 
D)  relative position. 
A)  dispersion index. 
B)  variability. 
C)  central tendency. 
D)  relative position.

Question 11

When calculating a frequency polygon, the first step is to

Accepted Answer

A)  list all scores. 
B)  calculate means and standard deviations. 
C)  determine if the distribution is normal. 
D)  calculate descriptive statistics. 
A)  list all scores. 
B)  calculate means and standard deviations. 
C)  determine if the distribution is normal. 
D)  calculate descriptive statistics.

Question 12

Logan accessed an existing database to answer his research question regarding the role of identification of a learning disability and odds of going to a private school. The variables of interest include category of disability, type of school, achievement scores in the first, third, and sixth grade, parents SES.
-Logan will report a measure of variability for each of the achievement scores. Which will he most likely report?

Accepted Answer

A)  Mean 
B)  Range 
C)  Standard Deviation 
D)  Median 
A)  Mean 
B)  Range 
C)  Standard Deviation 
D)  Median

Question 13

Maricella has collected her thesis data that examines differences in PSAT Math achievement in Latino boys and girls. However, upon a second look at the graphs of her raw scores, it appears that the boys scores are more normally distributed and the girls scores are somewhat more bunched together around the mean. Given this information, what can you conclude regarding the data set?

Accepted Answer

A)  The standard deviation is likely smaller for girls. 
B)  The girls' distribution is likely unimodal. 
C)  The girls' mean score is more representative of the data. 
D)  The girls' median is higher than the boys' median. 
A)  The standard deviation is likely smaller for girls. 
B)  The girls' distribution is likely unimodal. 
C)  The girls' mean score is more representative of the data. 
D)  The girls' median is higher than the boys' median.

Question 14

Given the following distribution of test scores: 88,90,78,82,94,86,80,92,92,96,98. The score that best represents the range of the distribution is:

Accepted Answer

A)  10. 
B)  12. 
C)  16. 
D)  20. 
A)  10. 
B)  12. 
C)  16. 
D)  20.

Question 15

Anne has two ordinal-level variables in a data set. Which of the following should she use to calculate a correlation between these two variables?

Accepted Answer

A)  Spearman Rho 
B)  Pearson r 
C)  Alpha Coefficient 
D)  Kappa' Tau 
A)  Spearman Rho 
B)  Pearson r 
C)  Alpha Coefficient 
D)  Kappa' Tau

Question 16

David received a raw score of 56. Given a mean of 50, a median of 50, a standard deviation of 4.
-What is David's z score?

Accepted Answer

A)  -1.5 
B)  0.0 
C)  1.5 
D)  2.5 
A)  -1.5 
B)  0.0 
C)  1.5 
D)  2.5

Question 17

Given the following scores on a midterm exam 72, 89, 91, 90, 100, 68, 80,76, 78,94,94,90,84,86,88,87,92,96,74,93, find the best answer to the following questions.
-Calculate the standard deviation of the scores.

Accepted Answer

A)  4.6 
B)  6.8 
C)  8.7 
D)  9.4 
A)  4.6 
B)  6.8 
C)  8.7 
D)  9.4

Question 18

Given the following set of scores: 6,7,5,12,11,9,9,7,6,10,6. The score that best represents the variance is

Accepted Answer

A)  3.25 
B)  5.40 
C)  6.76 
D)  9.0 
A)  3.25 
B)  5.40 
C)  6.76 
D)  9.0

Question 19

Nia has collected her dissertation data that tests a prediction model of student retention of international college students. She finds that in students from China, the predictor variables have much less variance than the same variables in students from European countries. Given this information, what can you conclude regarding the data set?

Accepted Answer

A)  The standard deviation is likely smaller the Chinese students. 
B)  The mean is likely higher for the Chinese students. 
C)  The variance is likely larger for the European students. 
D)  The mean is likely higher for the European students. 
A)  The standard deviation is likely smaller the Chinese students. 
B)  The mean is likely higher for the Chinese students. 
C)  The variance is likely larger for the European students. 
D)  The mean is likely higher for the European students.

Question 20

The z-score is an example of a

Accepted Answer

A)  standard score. 
B)  correlation measure. 
C)  variability. 
D)  measure of central tendency. 
A)  standard score. 
B)  correlation measure. 
C)  variability. 
D)  measure of central tendency.

Given the following test scores, what score represents the median? 92, 92, 73, 68, 80, 91, 82, 86, 92, 94, 95, 96, 97.

The statistical symbol '∑' represents the

A score at the mean of the normal distribution represents a stanine of

A score at -1 standard deviation represents a percentile rank of approximately

Garrett did a survey to determine the favorite sport of fourth grade children in Williamstown. Which of the following is the appropriate measure of central tendency for his data?

Given the following scores on a midterm exam 72, 89, 91, 90, 100, 68, 80,76, 78,94,94,90,84,86,88,87,92,96,74,93, find the best answer to the following questions. -Describe the distribution of the scores.

The median of the following distribution 1,2,4,4,5,5,5,6,6,8,9 is:

Given the following set of scores: 6,7,5,12,11,9,9,7,6,10,6. The score that best represents the range is:

Given the following set of scores: 6,7,5,12,11,9,9,7,6,10,6. The score that best represents the median is:

Francis wants to present the average mathematics score attained by the participants in her study. She needs to report a measure of

When calculating a frequency polygon, the first step is to

Given the following distribution of test scores: 88,90,78,82,94,86,80,92,92,96,98. The score that best represents the range of the distribution is:

Anne has two ordinal-level variables in a data set. Which of the following should she use to calculate a correlation between these two variables?

David received a raw score of 56. Given a mean of 50, a median of 50, a standard deviation of 4. -What is David's z score?

Given the following scores on a midterm exam 72, 89, 91, 90, 100, 68, 80,76, 78,94,94,90,84,86,88,87,92,96,74,93, find the best answer to the following questions. -Calculate the standard deviation of the scores.

Given the following set of scores: 6,7,5,12,11,9,9,7,6,10,6. The score that best represents the variance is

The z-score is an example of a

Introduction to Educational Research

Selecting and Defining a Research Topic

Reviewing the Literature

Preparing and Evaluating a Research Plan

Selecting a Sample

Selecting Measurement Instruments

Survey Research and Resources

Correlational Research and Resources

Causal-Comparative Research

Experimental Research

Single-Subject Experimental Research

Inferential Statistics

Qualitative Data Collection

Narrative Research

Ethnographic Research

Case Study Research

Qualitative Research: Data Analysis and Interpretation

Mixed Methods Research: Integrating Qualitative and Quantitative Methods

Action Research

Preparing a Research Report

Evaluating a Research Report

Filters

Exam 12: Descriptive Statistics Activities and Resources

Given the following test scores, what score represents the median? 92, 92, 73, 68, 80, 91, 82, 86, 92, 94, 95, 96, 97.

The statistical symbol '∑' represents the

A score at the mean of the normal distribution represents a stanine of

A score at -1 standard deviation represents a percentile rank of approximately

Garrett did a survey to determine the favorite sport of fourth grade children in Williamstown. Which of the following is the appropriate measure of central tendency for his data?

Given the following scores on a midterm exam 72, 89, 91, 90, 100, 68, 80,76, 78,94,94,90,84,86,88,87,92,96,74,93, find the best answer to the following questions. -Describe the distribution of the scores.

The median of the following distribution 1,2,4,4,5,5,5,6,6,8,9 is:

Given the following set of scores: 6,7,5,12,11,9,9,7,6,10,6. The score that best represents the range is:

Given the following set of scores: 6,7,5,12,11,9,9,7,6,10,6. The score that best represents the median is:

Francis wants to present the average mathematics score attained by the participants in her study. She needs to report a measure of

When calculating a frequency polygon, the first step is to

Given the following distribution of test scores: 88,90,78,82,94,86,80,92,92,96,98. The score that best represents the range of the distribution is:

Anne has two ordinal-level variables in a data set. Which of the following should she use to calculate a correlation between these two variables?

David received a raw score of 56. Given a mean of 50, a median of 50, a standard deviation of 4. -What is David's z score?

Given the following scores on a midterm exam 72, 89, 91, 90, 100, 68, 80,76, 78,94,94,90,84,86,88,87,92,96,74,93, find the best answer to the following questions. -Calculate the standard deviation of the scores.

Given the following set of scores: 6,7,5,12,11,9,9,7,6,10,6. The score that best represents the variance is

The z-score is an example of a

Introduction to Educational Research

Selecting and Defining a Research Topic

Reviewing the Literature

Preparing and Evaluating a Research Plan

Selecting a Sample

Selecting Measurement Instruments

Survey Research and Resources

Correlational Research and Resources

Causal-Comparative Research

Experimental Research

Single-Subject Experimental Research

Inferential Statistics

Qualitative Data Collection

Narrative Research

Ethnographic Research

Case Study Research

Qualitative Research: Data Analysis and Interpretation

Mixed Methods Research: Integrating Qualitative and Quantitative Methods

Action Research

Preparing a Research Report

Evaluating a Research Report

Filters