Psych 230

You are enjoying a relaxing hike when the answer to a problem you have been struggling with for days and had put aside suddenly revealed itself this method of knowing it called the

Method of Intuition

This method of knowing uses both reasoning and intuition, but relies on objective assessments hypothesis testing is an essential step in the use of this method this method of knowing it called:

Scientific method

This method of knowing uses reason alone to arrive at knowledge often using syllogisms in which a major premise and minor premise are followed by a conclusion

Method of rationalism

Observational studies can be used to determine causality

False

Highway age reaction time and drug dose are examples of

Variables

This type of research is conducted on samples in an effort to Estimate the level of one or more population characteristics

Parameter estimation research

Is statistic calculated on population data is known as

A parameter

Inferences about populations based on sample data

Inferential

____ statistics are concerned with techniques that are used to describe characterize the obtained data

Descriptive

True experiments which include manipulation of the independent variable measurement of dependent variable, and random samplings can be used determine causality

True

Statistical notation, N stands for

The total number of subjects or scores

This scale has categories for units

Nominal

The values on this scans represent rank ordering

Ordinal

This scale has equal intervals Between adjacent units but does not have an absolute zero

Interval

Ratio

This skill has equal intervals between Adjacent units does not have an absolutely zero

Interval

The Celsius skill of temperature is an example of the variable used on the ____ scale

Continuous

This type of variable theoretically can have an infinite number of values between adjacent units on the scale

The real limits of continuous variable are those values that are above and below the recorded value by ____ of the smallest measuring unit of the scales

One half

Two or more

It is standard practice to carry all intermediate calculations to ______ decimal places

10.5

What is the upper real limit of a reported value of 10 pounds with the smallest unit of measurement of the scale is 1 pound?

9

What is the lower real limit of a reported value of 10 pounds on the smallest unit of measurement of the scale is 2 pounds?

Width of the class interval

The range divided by the number of class rules and a planned frequency distribution will give you the

The proportion of the total number of scores that occurs in each interval

A relative frequency distribution indicates

The number of scores the fall below the upper real limit of each class interval

A cumulative frequency distribution indicates

The percentage of scores of fall below the upper rule limit of each interval

A cumulative percentage distribution indicates

Negatively skewed

When a curve is ____, most of the scores occur at the Hyatt valleys of The XX is in the curve tails off towards the lower end

The bats touch on a histogram

One way to differentiate a bar graph from a histogram is that

Bar graph

Frequency, distributions of nominal or ordinal data are customarily plotted using a

The interval width

In this Chapter, the abbreviation i denotes

Percentile rank of score

The ______ is the percentage of scores with values lower than the score in question

Arithmetic mean

Given a set of N scores dividing the sum of the scores by N would give you the

Of the measures of central tendency, the meanest, the most sensitive to sampling variation

Which of the following is not a property of the mean?

Median

The _____ Is defined as the scale value below which 50% of the scores fall

Deviation score

The ______ tells you how far away the raw score is from the mean

Standard deviation

The square root of the variance will give you the

Divide SS by N - 1 rather than N

When calculating the sample center deviation we_____ To make it a more accurate estimate of the population standard deviation

The bean of the variable x

The italicized x with the bar over it is referred to as xbar ending notes

The deviation score for population data

X minus mu would give you

68

Approximately_____ Percent of the values under normal curve fall within one cent deviation of the mean

0

The meaning of a Z distribution has a value of

1

The SD of a z distribution has s value of

False

Transforming raw scores into the scores changes the shape of the distribution

They will be the same

He created histogram of 50 raw scores. You convert the raw scores to the score. Equivalent and create a new histogram. How will the shape of the two distributions differ?