Inferences from Data

Quiz
•
Mathematics
•
7th Grade
•
Hard
Anthony Clark
FREE Resource
17 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The following dot plots show the amount of time it takes each person, in a random sample, to complete two similar problems. Make a comparative inference about the two problems.
The problems are equally challenging.
Problem 2 is more difficult because it took students longer on average.
Problem 1 is more difficult because it took students longer on average.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The following shows the number of calls two radio shows get each day for a ten day period. The two shows are on at the same time. Make a comparative inference based on the median values.
Show 1 usually receives more calls.
Show 2 usually receives more calls.
The shows usually receive equal numbers of calls.
There is not enough data to draw an inference.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In an effort to try to convince her mother that she is too old to join the intermediate swim class, Mira, who is 13 years old, gathers data on the ages of a random sample of members of the current intermediate swim class. The results of the data collected by Mira are displayed in the dot plot shown.
It is likely that she will be able to convince her mother. Mira's age is within the area where the data are clustered.
It is likely that she will be able to convince her mother. Mira's age is to the left of the area where the data are clustered.
It is unlikely that she will be able to convince her mother. Mira's age is within the area where the data are clustered.
It is unlikely that she will be able to convince her mother. Mira's age is to the left of the area where the data are clustered.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Mykel surveyed 15 7th graders and 15 8th graders at his school to see how many hours they spend per day listening to music. He made two box plots to compare the data sets. What inference can he draw from the data sets?
The range is greater for the 8th graders, so there is greater variability for the 8th graders than the 7th graders.
The person who listens to music the least is a 7th grader.
The median is greater for the 7th graders, so they generally spend more time listening to music than 8th graders.
No inferences can be made from the box plots.
5.
MULTIPLE SELECT QUESTION
1 min • 1 pt
A representative sample of 80 customers in a clothing store was surveyed about how they paid for their purchases. The table shows the responses. Based on the results, which of the following are valid inferences. Select two answer choices.
Tomorrow, 8 out of the first 80 customers will for sure pay with a gift card.
In a group of 40 customers, it is expected that about 10 will pay with cash.
About 30% of all the store's customers will pay with a credit card.
A sample of 100 customers would provide less reliable data.
6.
MULTIPLE SELECT QUESTION
1 min • 1 pt
A representative sample of 80 customers in a clothing store was surveyed about how they paid for their purchases. The table shows the responses. Based on the results, which of the following are valid inferences. Select all that apply.
Tomorrow, 8 out of the first 80 customers will for sure pay with a gift card.
In a group of 40 customers, it is expected that about 10 will pay with cash.
About 0.3, or 30%, of all the store's customers will pay with a credit card.
A sample of 100 customers would provide less reliable data.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The manager of a music store surveyed a random sample of customer who shop in the store about their favorite type of music. The table shows the number of customers who selected each type of music. Based on the information in the table, which inference about the favorite type of music of all the customers who shop in the music store appears to be valid?
They are certain to select rock or pop music.
They are less likely to select country or rap music than rock music.
They are more likely to select country music than jazz, classical, or rap music.
They are certain to select any type of music other than jazz music.
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