Chapter 3 review- Measures of Center and Spread

Front

What is the median of the data set 10,10,20,25,30,35,35,35?

Back

27.5

Tags

CCSS.6.SP.B.5C

Front

What conclusion can be drawn from the means and standard deviations of magazines (Mean=35, SD=7) and papers (Mean=25, SD=10)?

Back

Papers were more spread out than magazines by dividing SD/mean.

Tags

CCSS.7.SP.B.4

Front

Which of the following is part of the five number summary? Range, Median, Mean, Mode?

Back

Median

Tags

CCSS.6.SP.B.5B

Front

If a test has a mean of 84 and a standard deviation of 4, what is the z-score for a raw score of 90?

Back

1.5

Tags

CCSS.HSS.ID.A.4

Front

How do you find the interquartile range (IQR)?

Back

Q3 - Q1

Tags

CCSS.6.SP.B.5C

Front

What is the definition of mean in statistics?

Back

The average of a set of numbers, calculated by dividing the sum of the values by the number of values.

Tags

CCSS.6.SP.B.5C

Front

What is standard deviation?

Back

A measure of the amount of variation or dispersion in a set of values.

Front

What does the five number summary consist of?

Back

Minimum, Q1, Median, Q3, Maximum.

Tags

CCSS.6.SP.B.5B

Front

How do you calculate the range of a data set?

Back

Range = Maximum - Minimum.

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Front

What is the formula for calculating the z-score?

Back

Z = (X - Mean) / Standard Deviation.