Frequency Distribution Table, Frequency Distribution Graph, Distribution – Statistics
The key terms discussed in these Stats chapters are Ordinal, Frequency Distribution Graph, Frequency Distribution Table, Distribution & Histogram The Statistics Quiz is based on these chapters.
For an experiment comparing two methods of teaching social skills training to autistic children, the independent variable is ___ and the dependent variable is ___.
Teaching methods; the social skills that are learned
A researcher uses an anonymous survey to investigate the television-viewing habits of American adolescents. The entire group of American adolescents is an example of a ___.
What is the FINAL STEP to be PERFORMED in the mathematical expression, (EX)2?
Add the scores
A characteristic, usually a numerical value, which describes a sample is called a ___.
Statistic
Using letter grades (A, B, C, D, and E) to classify student performance on an exam is an example of measurement on a(n) ___ scale of measurement.
Ordinal
Which of the following is DONE LAST in the order of OPERATIONS?
Addition
For an experiment comparing two methods of teaching social skills training to autistic children, the independent variable is ___ and the dependent variable is ___.
Teaching methods; the social skills that are learned
A researcher uses an anonymous survey to investigate the television-viewing habits of American adolescents. The entire group of American adolescents is an example of a ___.
Population
What is the FINAL STEP to be PERFORMED in the mathematical expression, (EX)2?
Add the scores
A characteristic, usually a numerical value, which describes a sample is called a ___.
Statistic
Using letter grades (A, B, C, D, and E) to classify student performance on an exam is an example of measurement on a(n) ___ scale of measurement.
Ordinal
Which of the following is DONE LAST in the order of OPERATIONS?
Addition
A histogram is constructed so that adjacent bars touch.
True
If a set of exam scores forms a symmetrical distribution, what can you likely conclude about the students’ scores?
About 50% of the students had high scores and rest had low scores
In a population of N = 10 scores, the smallest score is X = 8 and the largest score is X = 20. The range for the population is ____. (the data are discrete; and there is no need to use real limits)
12
In a positively skewed distribution, the scores pile up on the left side of the distribution and taper off to the right.
True
For the following frequency distribution of QUIZ SCORES, how many individuals took the quiz? X=5, 4, 3, 2, 1 // f=6 , 5, 5, 3, 2
n = 21
A biologist records the number of trout, bass, perch, and other types of fish caught in a local lake during a 2 – week period. If the results are organized in a frequency distribution table ,WHAT VALUES would be LISTED in the FIRST COLUMN?
Different types of fish
For the following distribution, how many people have scores greater than X = 14? (hint = HALF of 14) X = 20-24, 15- 19-10-14- 5-9 // F = 2, 5, 4, 1
7
A researcher collects a sample of n = 20 Introductory Psychology textbooks and records the number of pages in each book. The results are then placed in a grouped frequency distribution table using intervals of 0-99 pages, 100-199 pages, 200, 299 pages and so on. If the results were converted into a frequency distribution graph, WHAT KIND OF GRAPH SHOULD BE USED?
Either a histogram or a polygon
How many individual scores are in the following distribution? f = 4, 3, 2, 1, // X = 1, 2, 3, 4, 5, 6 (count the f column = 10)
n = 10
WHAT IS THE SHAPE of the distribution for the following set of data? X = 5, 4, 3, 2, 1, // f = 1, 1, 2, 4, 5
Positively skewed
What is the VALUE of E(X-1)2 for the scores 1, 2, 1, 4?
10
Frequency Distribution Table – Statistics