Question 1

Given a person with a z score of 0 on a norm-referenced assessment, what can we conclude regarding her performance? Compared to the norm group,

Accepted Answer

A)  the person performed poorly. 
B)  the person performed at the mean. 
C)  the person performed above average. 
D)  the person performed at the 34 percentile. 
A)  the person performed poorly. 
B)  the person performed at the mean. 
C)  the person performed above average. 
D)  the person performed at the 34 percentile. B

Question 2

Given the following distribution-24,19,15,18,16,24,17-the score that best represents the mode is

Accepted Answer

A)  15 
B)  18 
C)  19 
D)  24 
A)  15 
B)  18 
C)  19 
D)  24 C

Question 3

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

Accepted Answer

A)  5. 
B)  6. 
C)  8. 
D)  10. 
A)  5. 
B)  6. 
C)  8. 
D)  10. C

Question 4

Kenny received a raw score of 42. Given the test had a mean of 48 a median of 48 and a standard deviation of 3.
-What is Kenny's z score?

Accepted Answer

A)  -2 
B)  -1 
C)  1 
D)  2 
A)  -2 
B)  -1 
C)  1 
D)  2

Question 5

The measure of central tendency that represents the midpoint of the scores in a distribution is the

Accepted Answer

A)  mode. 
B)  standard deviation. 
C)  mean. 
D)  median. 
A)  mode. 
B)  standard deviation. 
C)  mean. 
D)  median.

Question 6

Of the following, which represents a negatively skewed distribution?

Accepted Answer

A)  Mean<median 
B)  Median< mean 
C)  Median<mode 
D)  Mean <mode 
A)  Mean<median 
B)  Median< mean 
C)  Median<mode 
D)  Mean <mode

Question 7

Claus received a raw score of 86. Given that the test had a mean of 88, and a standard deviation of 4. What is Claus's approximate t -score?
-What is Claus's approximate t score?

Accepted Answer

A)  0 
B)  45 
C)  75 
D)  90 
A)  0 
B)  45 
C)  75 
D)  90

Question 8

Machine-scored data can best assist with

Accepted Answer

A)  the validity of the assessment. 
B)  the reliability of the assessment. 
C)  the reliability of the scoring. 
D)  the validity of the scoring. 
A)  the validity of the assessment. 
B)  the reliability of the assessment. 
C)  the reliability of the scoring. 
D)  the validity of the scoring.

Question 9

The first step in coding data is

Accepted Answer

A)  determining how categorical data will be coded. 
B)  determining how many digits are necessary for each variable. 
C)  giving all participants an ID number. 
D)  running descriptive statistics for all variables. 
A)  determining how categorical data will be coded. 
B)  determining how many digits are necessary for each variable. 
C)  giving all participants an ID number. 
D)  running descriptive statistics for all variables.

Question 10

A student scored at the 88th percentile in mathematics achievement on the national assessment. Of the following, which is an appropriate interpretation of the student's score?

Accepted Answer

A)  His t score is approximately 58. 
B)  His z score less than 2. 
C)  His stanine score is approximately 6. 
D)  His score is higher than the mean. 
A)  His t score is approximately 58. 
B)  His z score less than 2. 
C)  His stanine score is approximately 6. 
D)  His score is higher than the mean.

Question 11

Quantitative indices calculated for a sample drawn from a population are referred to as

Accepted Answer

A)  statistics 
B)  inferential. 
C)  parameters. 
D)  statistics. 
A)  statistics 
B)  inferential. 
C)  parameters. 
D)  statistics.

Question 12

George collected achievement score data for each child from a middle school. He has their gender, age, teacher and score on the achievement measure as his data fields.
-George needs to calculate the central tendency of his variable teacher. Which measure should he use?

Accepted Answer

A)  median 
B)  mode 
C)  range 
D)  mean 
A)  median 
B)  mode 
C)  range 
D)  mean

Question 13

Given the following, 1,2,4,4,5,5,5,6,6,8,9, what can be said regarding their distribution?

Accepted Answer

A)  It resembles a normal distribution. 
B)  It is negatively skewed. 
C)  It is positively skewed. 
D)  It is bi-modal. 
A)  It resembles a normal distribution. 
B)  It is negatively skewed. 
C)  It is positively skewed. 
D)  It is bi-modal.

Question 14

The mean 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 15

A standard score is a measure of

Accepted Answer

A)  variability. 
B)  central tendency. 
C)  relative position. 
D)  correlation. 
A)  variability. 
B)  central tendency. 
C)  relative position. 
D)  correlation.

Question 16

Given the following test scores, what can be said regarding their distribution? 92, 92, 73, 68, 80, 82, 91, 86, 92, 94, 95, 96, 97.

Accepted Answer

A)  It resembles a normal distribution 
B)  It is negatively skewed. 
C)  it is positively skewed. 
D)  It is unimodal. 
A)  It resembles a normal distribution 
B)  It is negatively skewed. 
C)  it is positively skewed. 
D)  It is unimodal.

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.
-What is the mode?

Accepted Answer

A)  68 
B)  76 
C)  84 
D)  90 
A)  68 
B)  76 
C)  84 
D)  90

Question 18

Pete lives in a very demographically diverse community. Interestingly incomes are either quite high or quite low with few 'average' incomes in his town. He is conducting a survey regarding opinions about access to medical care. When he considers the variable 'income' in his data, which of the following is he most likely to report?

Accepted Answer

A)  Range 
B)  Mean 
C)  Median 
D)  Mode 
A)  Range 
B)  Mean 
C)  Median 
D)  Mode

Question 19

Cynthia is reporting standardized test scores to parents of her students. She knows that on the test she gave the mean is an 80 and the standard deviation is 6. If her student Sharona received a t score of 40, which of the following can we accurately conclude regarding Sharona's performance?

Accepted Answer

A)  She had a raw score greater than 80. 
B)  She had a positive z -score. 
C)  Her stanine score was an 8. 
D)  Her performance was less than average. 
A)  She had a raw score greater than 80. 
B)  She had a positive z -score. 
C)  Her stanine score was an 8. 
D)  Her performance was less than average.

Question 20

David received a raw score of 56. Given a mean of 50, a median of 50, a standard deviation of 4.
-Given David's information above, what is his T score?

Accepted Answer

A)  35 
B)  55 
C)  65 
D)  75 
A)  35 
B)  55 
C)  65 
D)  75

Exam 12: Descriptive Statistics Activities and Resources

Given a person with a z score of 0 on a norm-referenced assessment, what can we conclude regarding her performance? Compared to the norm group,

Given the following distribution-24,19,15,18,16,24,17-the score that best represents the mode is

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

Kenny received a raw score of 42. Given the test had a mean of 48 a median of 48 and a standard deviation of 3. -What is Kenny's z score?

The measure of central tendency that represents the midpoint of the scores in a distribution is the

Of the following, which represents a negatively skewed distribution?

Claus received a raw score of 86. Given that the test had a mean of 88, and a standard deviation of 4. What is Claus's approximate t -score? -What is Claus's approximate t score?

Machine-scored data can best assist with

The first step in coding data is

A student scored at the 88th percentile in mathematics achievement on the national assessment. Of the following, which is an appropriate interpretation of the student's score?

Quantitative indices calculated for a sample drawn from a population are referred to as

George collected achievement score data for each child from a middle school. He has their gender, age, teacher and score on the achievement measure as his data fields. -George needs to calculate the central tendency of his variable teacher. Which measure should he use?

Given the following, 1,2,4,4,5,5,5,6,6,8,9, what can be said regarding their distribution?

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

A standard score is a measure of

Given the following test scores, what can be said regarding their distribution? 92, 92, 73, 68, 80, 82, 91, 86, 92, 94, 95, 96, 97.

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. -What is the mode?

Cynthia is reporting standardized test scores to parents of her students. She knows that on the test she gave the mean is an 80 and the standard deviation is 6. If her student Sharona received a t score of 40, which of the following can we accurately conclude regarding Sharona's performance?

David received a raw score of 56. Given a mean of 50, a median of 50, a standard deviation of 4. -Given David's information above, what is his T score?

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

A student scored at the 88^th percentile in mathematics achievement on the national assessment. Of the following, which is an appropriate interpretation of the student's score?