Quiz about 7th Grade Statistics

Question 1

_______ is a part of a group being surveyed.

Accepted Answer

Sample

Answer

Population

Answer

Random Sample

Answer

Quartile

Question 2

A new cable TV station wants to study the viewing habits of households.  The station surveys every household that purchased a new TV within the last 2 years in New York.  Is this random sampling?

Accepted Answer

No

Answer

Yes

Question 3

A poll is taken from 100 seniors in a high school where the senior class has 575 students.

Accepted Answer

Sample

Answer

Population

Question 4

If a cat eats 4 pounds of food in 5 days, how, how many pounds will it eat in 60 days?

Accepted Answer

48

Answer

50

Answer

12

Answer

72

Question 5

At a middle school, the 7th graders will conduct a survey for where to go on a field trip. Which method will result in the least biased decision?

Accepted Answer

to randomly choose some 7th grade students to select a location

Answer

to randomly ask 8th grade students who went on a field trip last year

Answer

to ask all 7th grade teachers and administrators for a location

Answer

to ask the student council to choose a location

Question 6

Which scenario would produce the least biased results?

Accepted Answer

asking athletes at a gym what their favorite television show is

Answer

asking shoppers at a store where their favorite place to shop is

Answer

asking fans at a baseball game who their favorite baseball team is

Answer

asking students in a college library what their favorite college sports team is

Question 7

While working at the pizza place, Dakeus ask every customer if they are satisfied with the service. Is this a biased sample?

Accepted Answer

No

Answer

Yes

Question 8

Josh surveyed every 5th person who walked into the cafeteria. Is this a systematic random sample

Accepted Answer

Yes

Answer

No

Question 9

The graph makes it seem like Cy Young had 3 times as many wins as Jim Galvin. Is this a valid conclusion?

Accepted Answer

Yes, because Young only had about 150 more wins

Answer

No, Young did have 3 times as many wins

Question 10

The graph shows the results of a survey to determine student's favorite pets. Why is this graph misleading?

Accepted Answer

The percents do not add up to 100

Answer

The slices are the wrong color

Answer

The slices are not the correct size

Answer

Not misleading

Question 11

The table lists five counties with the largest area in Texas. Which measure of center/variation best represents the average size of these counties?

Accepted Answer

mean

Answer

IQR

Answer

mode

Answer

range

Question 12

A table shows the average of 3, 6, 4, 2, and 100. Is this data misleading, why?

Accepted Answer

Yes, because 100 is an extreme outlier

Answer

No, because all the numbers are less than 1000.

Answer

No, because 100 fits into the data set.

Answer

Yes, because 2 is an outlier

Question 13

Kim surveys 100 moviegoers that entered the movie theater in the first hour.  What type of sampling method is this?

Accepted Answer

Convenience

Answer

Random

Answer

Biased

Question 14

Why do we use double box and dot plots?

Accepted Answer

to compare populations

Answer

To make people confused

Answer

to make data seem misleading

Answer

to save space on paper

Question 15

How many more people 19 and under are in the French club than the Spanish club?

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 16

I want to compare parts of data to a whole. What data display should
I use?

Accepted Answer

circle graph

Answer

bar graph

Answer

double bar graph

Answer

line plot

Question 17

Identify the Population:
Gwinnett County Public Schools randomly selected 230 teachers to find out which technology resource is the most effective. 30 teachers chose Safari Montage, 45 selected Learn Zillion, 100 chose Ed Puzzle, and 55 chose Kahoot. GCPS concluded that all teachers prefer Ed Puzzle.

Accepted Answer

All teachers

Answer

230 Teachers

Answer

100 Teachers

Answer

55 Teachers

Question 18

Identify the Sample:
A restaurant wants to know if customers buy dessert when they eat out. As people leave the restaurant one evening, 20 people are surveyed at random. Eight people say they usually order dessert when they eat out. The restaurant concluded that most customers do not order dessert.

Accepted Answer

20 customers

Answer

All customers

Answer

8 customers

Answer

Dessert

Question 19

What is the mode in the set of data?
2,2,2,4,4,5,6,6,6,7

Accepted Answer

2 and 6

Answer

2

Answer

6

Answer

2,4, and 6

Question 20

find the median of
20 30 40 50 60

Accepted Answer

40

Answer

50

Answer

1

Answer

5

7th Grade Statistics

20 questions

_______ is a part of a group being surveyed.

A new cable TV station wants to study the viewing habits of households. The station surveys every household that purchased a new TV within the last 2 years in New York. Is this random sampling?

A poll is taken from 100 seniors in a high school where the senior class has 575 students.

If a cat eats 4 pounds of food in 5 days, how, how many pounds will it eat in 60 days?

At a middle school, the 7th graders will conduct a survey for where to go on a field trip. Which method will result in the least biased decision?

Which scenario would produce the least biased results?

While working at the pizza place, Dakeus ask every customer if they are satisfied with the service. Is this a biased sample?

Josh surveyed every 5th person who walked into the cafeteria. Is this a systematic random sample

The graph makes it seem like Cy Young had 3 times as many wins as Jim Galvin. Is this a valid conclusion?

The graph shows the results of a survey to determine student's favorite pets. Why is this graph misleading?

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