NCE Statistical Assessment Test with Complete Solution

NCE Statistical Assessment Test with Complete Solution When comparing the four scales of measurement, what distinguishes the interval scale from the ratio scale? - Absolute zero A research team designed a demographic questionnaire to collect information about participants. Which of the following variables identified on the questionnaire provides an example of an ordinal scale variable? - Rank in the military When looking at a list of student's test scores, the teacher notices that one test score is extremely lower than the majority of the scores. This is known as a(an): - outlier A teacher analyzes the scores from a recent test and determines a positively skewed curve. She infers that the majority of students knew: - only a few of the answers due to low scores A researcher is looking for a specific study report, in which he knows the kurtosis value. He reads the following kurtosis value in various reports. Which one supports a mesokurtic distribution? - 0 There are 12 participants who agree to take the test for a study focused on wellness. The total of all the participants' scores is 96. What is the mean? - 8 The teacher has a small class with only 7 students. The teacher grades their homework and reports scores of 10, 7, 8, 12, 9, 11, and 13. What is the median? - 10 The teacher grades the papers and determines the following set of scores: 90, 85, 87, 85, 92, 90, 83, 85, 98. What is the mean? - 85 The teacher calculates the highest score as being 97 and the lowest score as being 75. What is the range? - 22 The variance is determined to be 36. What would be the standard deviation? - 6 A teacher reports that the class scores are generally distributed according to a bell curve. This means: - 100% of the scores fall between -3 and +3 standard deviations from the mean A researcher determines that there is a positive correlation between sleep and test scores. This means as the amount of sleep is increased then test scores: - increase A teacher determines that the correlation between eating breakfast and doing well on the test is zero. This means: - there is an absence of a correlation In comparing Spearman's Rho to Phi Coefficient, one would generally prefer to use Spearman's Rho when correlating: - Likert scale responses A student conducting a research study was told by her professor to use a scatterplot in conjunction with calculating the correlation coefficient. She discovered that the data points clustered along a straight line. This means: - a linear relationship exists between variables In studying the correlation between the number of hours studied and scores on the comprehensive exam, the researcher found a correlation of .30. According to Cohen's guidelines, what would this mean regarding the strength of the relationship? - Medium In a follow-up study, a researcher reported that the correlation is .85. In the initial study, the correlation was .78. This means there is a(an): - Stronger correlation between the variables in the follow-up study A researcher wants to know if IQ predicts success in college. Which analysis is most appropriate? - Regression _______________ is defined as a set of tools and techniques used for describing, organizing, and interpreting information. - Statistics Which of the following is not one of the purposes of statistics? - Provides mental health diagnosis Averages, percentages, total frequencies, and measures of variability are examples of what type of statistics? - Descriptive Correlations, mean comparisons, and hypothesis testing are examples of what type of statistics? - Inferential Variables can be defined in how many ways? - 2 Variables that have numeric values are referred to as what type of variables? - Quantitative Variables that are defined using categories are considered what type of variables? - Qualitative Which scale of measurement is the most basic and issued to categorize data into groups that have different names but are not related to each other in any other systematic way? - Nominal In a __________ the bars touch one another, but in a bar graph, the bars do not. - Histogram The normal curve is an example of what type of graph? - Smooth curve In an asymmetrical distribution, if the majority of the scores fall on the high end of the distribution, the curve will appear: - Negatively skewed