Psychology 1 - Statistics

When comparing data, if one has a larger Standard Deviation this means

• It has a bigger average

• The data is less variable and spread

• The data is more variable and less consistent

• It has more participants responding

For a P value to be significant it must be

• More than 50%

• Less than 50%

• 0.10 and below

• <0.05

Which r value/s indicates the strongest relationship?

• -0.7

• -0.3

• 0.3

• 0

• 0.7

Identify the type of relationship between weight and price.

• The price is never 0 on the graph

• As weight increases, price increases

• There is a negative linear correlation between weight and price

• The price gets high at the end of the graph

The mode is:

• The average of all the values

• The middle number

• The most frequently occurring number

• The first number you see

Identify the formula for the mean

• Mean = sum of all values/number of values

• Mean = the middle number two numbers divided by two

• Mean = adding all the numbers together

Choose the options that fill in the blanks:

The r value in a set of data shows a stronger when it is closest to/is _______ and weaker when it is near or is _______.

• 0.5 and 1

• 0 and 1

• -1/1 and 0

• 1 and 0

Which p value indicates the most statistically significant results

• p = 0.05

• p = 0.004

• p = 0.005

• p = 0.006

You psychology professor wants to describe the average score on your first psychology test.  Which measure of central tendency is your professor most likely to use? 

• mean
• median
• mode 
• harmonic mean

The standard deviation

• indicates the average difference between each score in a group and the mean for that group of scores
• reveals the degree of skew for a a group of scores 
• is sensitive to scores at the extremes of a distribution of scores
• is used to determine whether a data set is positively or negatively skewed