Educational Research
This statement “The number of teachers in a large school district who use (1) the Lecture and (2) the Discussion method and apply SAT scores for obtaining results” shows:
· A. Quantitative data
· B. Categorical data
· C. Qualitative data
· D. Both a and b
122. Frequency polygons, skewed polygons, and histograms are techniques which are applicable to measure only:
· A. Quantitative data
· B. Categorical data
· C. Qualitative data
· D. Both a and b
123. In a Frequency Polygon, if the tail of the distribution trails off to the right, which type of skew will occur:
· A. Positive
· B. Negative
· C. Normal
· D. None
124. A ______ is a bar graph used to display quantitative data at the interval or ratio level of measurement.
· A. Skewed polygon
· B. Frequency polygon
· C. Histogram
· D. Histogram and Stem Leaf Plot
125. A ______ is a display that organizes a set of data to show both its shape and distribution.
· A. Skewed polygon
· B. Frequency polygon
· C. Histogram
· D. Stem Leaf Plot
126. Stem leaf plots are particularly helpful in:
· A. Comparing two distributions
· B. Contrasting two distributions
· C. Evaluating two distributions
· D. Comparing and contrasting two distributions
127. Many distributions of data tend to follow a certain specific shape of distribution curve called:
· A. Normal curve
· B. Distribution curve
· C. Normal distribution
· D. None
128. Averages or measures of central tendency enable a researcher to summarize the data in a frequency distribution with a:
· A. Single number
· B. Two numbers
· C. More than two numbers
· D. None
129. In the following distribution of scores, what is the Mode? 25, 29, 19, 17, 16, 16, 16, 14, 14, 11, 10, 9, 9
· A. 14 and 9
· B. 14 and 16
· C. 16
· D. 25
130. In the distribution of scores 70, 74, 82, 86, 88, and 90, the median is:
· A. 86
· B. 82
· C. 85
· D. 84
131. This is the most appropriate average to calculate when the data result in skewed distributions:
· A. The mode
· B. The median
· C. The mean
· D. Normal distribution
132. The mean of a distribution containing scores of 52, 68, 74, 86, 95, and 105 is:
· A. 80
· B. 85
· C. 75
· D. 80.5
133. For research purposes, which type of mean is most common in use:
· A. Geometric mean
· B. Harmonic mean
· C. Arithmetic mean
· D. None
134. Which of the three averages (measures of central tendency) is best of all:
· A. The mean
· B. The mode
· C. The median
· D. Both a and c
135. The interquartile range (IQR) is the difference between the:
· A. Third and first quartiles
· B. Second and first quartiles
· C. Third and second quartiles
· D. None
137. The distance between the highest and lowest scores in a distribution is represented by:
· A. The Mean
· B. The Mode
· C. The Range
· D. The Median
138. If a researcher wants to give a quick estimation of validity, he/she should use:
· A. The Mean
· B. The Mode
· C. The Range
· D. The Median
139. The simplest form of standard score, which expresses how far a raw score is from the mean in standard deviation units, is:
· A. Standard score
· B. Z score
· C. T score
· D. The Range
140. It is a percent stated in decimal form and refers to the likelihood of an event occurring:
· A. Z score
· B. Standard score
· C. T score
· D. Probability
141. T scores are simply Z scores expressed in a different form. If a Z score is zero, then its T score will be equal to:
· A. Zero
· B. 55
· C. 100
· D. 50
142. It is a numerical or graphical way to summarize data obtained from the population:
· A. Statistic
· B. Parameter
· C. Analysis
· D. Statistical analysis
143. The term, as used in research, refers to the extent to which the scores on a quantitative variable in distribution are spread out:
· A. Polygon
· B. Normal curve
· C. Variability
· D. None
144. The distribution curve of a normal distribution is called a normal curve. It is:
· A. Bell-shaped
· B. Straight
· C. Circle-shaped
· D. None
145. Researchers use various graphic techniques to summarize categorical data, including:
· A. Frequency tables, Bar graphs, Pie charts
· B. Frequency tables, Histograms, Equivalent form method
· C. Split-half procedure, Frequency table
· D. None of them
146. These are certain types of procedures that allow researchers to make inferences about a population based on findings from a sample:
· A. Statistics
· B. Sample Parameters
· C. Inferential statistics
· D. None
147. There is no significant difference between the population mean of students using method A and the population mean of students using method B. It shows:
· A. Positive hypothesis
· B. Null hypothesis
· C. Negative hypothesis
· D. Significant
148. There is a significant difference between the population mean of students using method A and the population mean of students using method B. It shows:
· A. Null hypothesis
· B. Negative hypothesis
· C. Positive hypothesis
· D. None
149. Parametric techniques are most appropriate for:
· A. Interval data
· B. Nominal data
· C. Ordinal data
· D. Ratio data
150. Non-parametric techniques are most appropriate for:
· A. Interval data
· B. Nominal data
· C. Ordinal data
· D. Both b and c