Statistics Review

Which dot plot has the greatest variability?

• A
• B
• C
• D

True or False: all samples lead to a good prediction about an entire population.

• True
• False

Mrs. Boyd wants to find the average height of all her students in her classes. She decides to use the first 5 people who walk in the door. Is this a good representative sample?

• Yes
• No

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

Unbiased sampling is:

• when you choose the group you think will represent the sample
• when any member of the population is equally likely to be chosen for the sample

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

Biased sampling is

• when you choose a population that is more likely to give you the result you want
• when you choose a group that is equally likely to be chosen

Tags

CCSS.7.SP.A.1

Brandon put on a blindfold and picked 2 jelly beans from a jar.
Is this sample of the jelly beans in the jar likely to be biased?

• Yes
• No

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

Devon polled 642 drivers late on a Friday night.
Is this a random sample of the drivers in the city?

• Yes because this represents all the drivers in the city well.
• No, because this only represents people late on a friday night

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

The population describes:

• The group of people being surveyed
• part of the group being surveyed
• the whole world
• the school

Tags

CCSS.7.SP.A.1

The 1250 students at Eureka High School are voting for Homecoming King. The candidates are Tomlinson (captain of the football team), Garcia (class president), and Marsalis (marching band member). A pre-election poll is taken as students entered a football game a week before the election. The results: 203 Tomlinson, 42 Garcia, 105 Marsalis. Give the sampling proportion.

• 30%
• 48%
• 28%
• 10%

The 1250 students at Eureka High School are voting for Homecoming King. The candidates are Tomlinson (captain of the football team), Garcia (class president), and Marsalis (marching band member). A pre-election poll is taken as students entered a football game a week before the election. The results: 203 Tomlinson, 42 Garcia, 105 Marsalis. Name the sampling method.

• Systematic Sampling
• Sesame Chicken Sampling
• Stratified Sampling
• Convenience Sampling

Tags

CCSS.HSS.IC.B.3