reading quiz 4

Question 1

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

Answer 1

arithmetic mean

Question 2

three answers

Properties of the Mean

Answer 2

• The mean is sensitive to the exact values of all of scores in the distribution.
• The mean is sensitive to extreme scores.
• The sum of the deviation scores around the mean equals zero.

Question 3

The ____________ is defined as the scale value below which 50% of the scores fall.

Answer 3

median

Question 4

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

Answer 4

deviation score

Question 5

The square root of the variance will give you the __________.

Answer 5

standard deviation

Question 6

One descriptor of the following dataset would be that it is ______________.

[1,1,2,3,4,5,5]

Answer 6

bimodal

Question 7

Given the following three groups in which N = 15, what is the value of n3?
Group 1: [1,2,3,4,5,6]
Group 2: [5,4,3,2,1]
Group 3: [3,2,1,0]

Answer 7

4

Question 8

When calculating the sample standard deviation we ________________ to make it a more accurate estimate of the population standard deviation.

Answer 8

divide SS by N - 1 rather than N

Question 9

An italicized X with a bar over it is referred to as “X-bar” and denotes _________________________.

Answer 9

the mean of the variable X

Question 10

X minus mu would give you ____________.

Answer 10

a deviation score for population data