Stats Quiz

A jar contains 3 red marbles, 7 green marbles and 10 white marbles. If a marble is drawn from the jar at random, what is the probability that this marble is white?

• 1/20

• 7/20

• 10/20 = 1/2

• 20/20 = 1

Tags

CCSS.7.SP.C.7B

The blood groups of 200 people is distributed as follows: 50 have type A blood, 65 have B blood type, 70 have O blood type and 15 have type AB blood. If a person from this group is selected at random, what is the probability that this person has O blood type?

• 65/250

• 30%

• 70/200

• 70/250

Tags

CCSS.7.SP.C.7B

What value must the missing probability be?

• 1.0

• 0.1

• 0.2

• 0.4

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

What is a random variable?

• The number of values in a problem

• a variable whose values are determined by chance

• y =a + bx

What is the symbol for the numerical probability of success

• q

• (x)

• P

• S

Tags

CCSS.7.SP.C.7B

An event is any collection of outcomes from a probability experiment, consisting of one or more outcomes

• True

• False

For a set of data, the minimum, first quartile, median, third quartile, and maximum.(A boxplot is a visual display of the five-number summary.)

What is this for?

• Standard Deviation

• none, it is missing a step in the question

• 5 Number Summary

• Outliers

IQR

Select all that apply.

• Innermission

• Q3-Q1

• InterQuartile Range

• Standard deviation