GW 3

Question 1

What measure of central tendency is the highest point of a distribution?

Answer 1

Mode

Question 2

What is another name for the median?

Answer 2

50th percentile

Question 3

What is the median locator equation used to find the apparent median?

Answer 3

N+1 /2

Question 4

What is central tendency?

Answer 4

The average score most representative of all the values; describes the entire distribution

Question 5

The amount each individual gets when the total is distributed evenly

Answer 5

The mean

Question 6

Balances the distance between 2 points

Answer 6

The mean

Question 7

How do you find the weighted mean?

Answer 7

Add all the scores from both sets and divide by the total number of scores for both sets

Question 8

Does adding or subtracting a score change the mean?

Answer 8

Yes, unless it’s the same number as the mean.

Question 9

What happens when you add or subtract the same number to every score?

Answer 9

The mean changes by that same number as well.

Question 10

How many definitions of the mean are there?

Answer 10

3

Question 11

Can you mathematically manipulate the mode and the median?

Answer 11

No

Question 12

Which measure of central tendency is affected by extreme scores?

Answer 12

Mean

Question 13

How do you find whether a curve has a positive skew or a negative skew?

Answer 13

Mean-median>0, positive

Mean-median<0, negative

Question 14

What is the highest point of a skewed distribution?

Answer 14

The mode

Question 15

Where is the median in a skewed distribution?

Answer 15

Between the mode and the mean

Question 16

Where is the mean in a skewed distribution?

Answer 16

Closest to the skew, being pulled towards it by extreme values

Question 17

What does mean calculate?

Answer 17

The distance/range of scores from the middle.

Question 18

What measure of central tendency do we use for symmetrical graphs?

Answer 18

Mean, since there are no extreme values to throw it off

Question 19

What does the median calculate?

Answer 19

The middle with equal scores on both sides

Question 20

What measure of central tendency do we use for skewed graphs?

Answer 20

Median, since it is unaffected by extreme values

Question 21

What type of data is the mode usually used for?

Answer 21

Categorical/non-numerical

Question 22

How do you find range?

Answer 22

Max-min; crude measure

Question 23

Is it possible to have more than 1 mode?

Answer 23

Yes

Question 24

What measure of central tendency should you use when a certain score can’t be determined?

Answer 24

Median

Question 25

What measure of central tendency should you use with ordinal data?

Answer 25

Median, since ordinal categories don’t measure distance

Question 26

What is the mode of a rectangle?

Answer 26

There isn’t one