4/15 Inferences Progress Check (STA)

Required

1

The data below shows the heights, in inches, of students on the school’s gymnastics team and students on the school’s volleyball team.  Find the mean of both teams to determine which team is taller.  Round your answer to the nearest tenths place.


Gymnastics Team Mean _______                             
Volleyball Team's Mean _______ (round to the nearest tenth!)

Which team is taller?  _______                       
What's the difference in the median heights for both teams ?  _______ 

Required

1

Graham wants to find out the most popular football team at a game between the home team and the visiting team. Which of the following methods will give him the most accurate results?

Required

1

Consider the following data displays:

Which of the following is NOT the same for both sets of data?

Required

1

Alma randomly samples 2 different groups of students from her school to determine the average amount of time spent at after-school activities. The results of her surveys are shown in the table below.

Each group wants to prove that they have spent the greatest amount of time on afterschool activities. Which measure of center (mean, median, mode,) should each group use to justify their claim.

Required

1

The box-and-whisker plot shows the distribution of weight among dogs in two different pet stores.

At which pet store will the dogs weigh more?

Required

1

Wendy asked 40 students on the school football team if they ever injured themselves while playing sports. Fifteen football team members responded “Yes.” Wendy concluded that 375 of the 1,000 students in her school have injured themselves playing sports. What type of sample did Wendy conduct?

Required

1

Ricky and Sarah are comparing the height of the teachers in 7th grade.  The data is listed below by inches.  Round your answer to the nearest tenth if necessary.

Ricky: {61, 70, 63, 70, 75, 62, 63, 73, 66, 77, 68}

Sarah: {61, 76, 71, 77, 73, 74, 70, 75, 71, 65}

Calculate the MEAN and MAD for each student. 

Ricky:    MEAN = _______      MAD = _______ 

Sarah:    MEAN = _______     MAD = _______ 

Is Ricky or Sarah the more consistent player in the class game?  _______

Required

1

These two histograms show the number of text messages sent in one week by two groups of 100 students. The first histogram summarizes data from 6th grade students. The second histogram summarizes data from the 7th grade students.

Which data has a greater consistency in their data?

Required

1

Find the mode, median, mean, range, lower quartile, upper quartile, interquartile range, and mean absolute deviation for each data set.  Round your answer to the nearest tenth place.


mode = _______  
median = _______   
mean = _______  (round to the nearest tenths!)
range = _______   

mean absolute deviation (MAD) = _______ (round to the nearest tenths!)

Required

1

The given dot plot compares the number of hours in which students of a certain class study math and science per week.

Which of the following two statements are true? (Select 2)

Graham wants to find out the most popular football team at a game between the home team and the visiting team. Which of the following methods will give him the most accurate results?

Consider the following data displays:Which of the following is NOT the same for both sets of data?

The box-and-whisker plot shows the distribution of weight among dogs in two different pet stores.At which pet store will the dogs weigh more?

Wendy asked 40 students on the school football team if they ever injured themselves while playing sports. Fifteen football team members responded “Yes.” Wendy concluded that 375 of the 1,000 students in her school have injured themselves playing sports. What type of sample did Wendy conduct?

These two histograms show the number of text messages sent in one week by two groups of 100 students. The first histogram summarizes data from 6th grade students. The second histogram summarizes data from the 7th grade students.Which data has a greater consistency in their data?

The given dot plot compares the number of hours in which students of a certain class study math and science per week.Which of the following two statements are true? (Select 2)

Consider the following data displays:

Which of the following is NOT the same for both sets of data?

The box-and-whisker plot shows the distribution of weight among dogs in two different pet stores.

At which pet store will the dogs weigh more?

These two histograms show the number of text messages sent in one week by two groups of 100 students. The first histogram summarizes data from 6th grade students. The second histogram summarizes data from the 7th grade students.

Which data has a greater consistency in their data?

The given dot plot compares the number of hours in which students of a certain class study math and science per week.

Which of the following two statements are true? (Select 2)