
Data Inferences
Authored by Barbara White
Mathematics
7th Grade
15 Questions
CCSS covered

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1.
MULTIPLE CHOICE QUESTION
5 mins • 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.
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calculate the mean.
29
29.5
28.5
33
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Calculate the mean.
25
24
27
24.5
4.
MULTIPLE CHOICE QUESTION
5 mins • 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.
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sonya randomly surveys 26 seventh graders to gather data about the amount of time spent each week using the Internet. Sonya records the data in the dot plot shown. What is the median of the data set?
7
7.5
8
7.25
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A random survey was conducted about students' favorite vegetables. Ten students voted for green beans, 12 students voted for corn, and 3 students voted for broccoli. Rachel concludes that 240 of the 600 students in the school are expected to prefer green beans. Is her conclusion valid?
Rachel's conclusion is not valid. The ratio of students in the sample who voted for green beans to the total number of students in the sample can be written as 10:25, which is not equivalent to the ratio 240:600
Rachel's conclusion is valid. The ratio of students in the sample who voted for green beans to the total number of students in the sample can be written as 10:25, which is equivalent to the ratio 240:600
Rachel's conclusion is not valid. The ratio of students in the sample who voted for green beans to the total number of students in the sample can be written as 10:25, which is equivalent to the ratio 240:600
Rachel's conclusion is valid. The ratio of students in the sample who voted for green beans to the total number of students in the sample can be written as 10:25, which is not equivalent to the ratio 240:600
Tags
CCSS.6.RP.A.3A
7.
MULTIPLE CHOICE QUESTION
5 mins • 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.
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