### 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