Below is the result of a class survey. The students were asked to state the make of the car they drove and their level of satisfaction with the car on scale of 1-10.   Which make of car had the smallest IQR?

Below is a table from the General Social Survey. In 1986, respondents were asked how much they agreed or disagreed with the following statement. “Welfare helps prevent hunger and starvation”.   Male Female Row Total Strongly Agree 96 132 228 Agree 455 615 1070 Disagree 58 78 136 Strongly Disagree 9 17 26 Total 618 842 1460   What is the probability that a female says that she strongly agreed?

Does someone’s current age affect what they think is an appropriate retirement age? People were polled about both their current age and what they thought would be an appropriate retirement age. They wanted to predict the “appropriate retirement age” by using their current age. The data below is only for female participants.   The average of current age was 33.15 and the standard deviation was 13.93 . The average of appropriate age of retirement was 62.07 and the standard deviation was 8.10. The value for correlation was 0.1616 .   Find the least squares regression equation.

The following is an excerpt from a New York Times article; Naps May Be Good for a Baby’s Learning by Nicholas Bakalar. The article appeared on January 12th at 3pm. ” Researchers tested 6- and 12-month old babies using a puppet with a removable mitten containing a bell. The experimenter engaged the child, then removed the mitten and shook it three times to demonstrate its sound and movement, and replaced the mitten on the puppet’s hand. She repeated the procedure several times. The study was published in Proceedings of the National Academy of Sciences (Links to an external site.).   On average, the infants napped for 106 minutes during the ensuing four hours. But 21 of the 40 babies slept 30 minutes or less. The next day, after all the infants had slept soundly for the night, the researchers presented the materials again to see if the infant would remember and try to reproduce the mitten procedure. The babies who had taken long naps after the teaching session were significantly better at reproducing the procedure than those who napped less than 30 minutes.”   Are the “21 out of 40 babies(52.5%)” in this study- the statistic or the parameter?

Below is a data set of the number of male students enrolled in M.S. program (Fall) in the C.S. department at the University of Florida in the last 7 years: 72,48,46,27,58,63,71 What is the mean?

The below stem and leaf plot states the petal width(cm) of a sample of 150 irises.     What is the minimum petal width?

Below is a table from the General Social Survey. In 1986, respondents were asked how much they agreed or disagreed with the following statement. “Welfare helps prevent hunger and starvation”.   Male Female Row Total Strongly Agree 96 132 228 Agree 455 615 1070 Disagree 58 78 136 Strongly Disagree 9 17 26 Total 618 842 1460   Given that the respondent strongly disagrees, what is the probability that the respondent is male?

Below are the calories per serving for a selection of 5 brands of cereal found on the top shelf of a grocery store. Find the sample standard deviation.   Cereal Calories 100% Bran 70 100% Natural Bran 120 All-Bran 70 All Bran with extra Fiber 40 Almond Delight 110      

Below is a table from the General Social Survey. In 1986, respondents were asked how much they agreed or disagreed with the following statement. “Welfare helps prevent hunger and starvation”.   Male Female Row Total Strongly Agree 96 132 228 Agree 455 615 1070 Disagree 58 78 136 Strongly Disagree 9 17 26 Total 618 842 1460   What is the probability that a female says that she agreed?

Microsoft has a new online tool that tries to guess the age of the individual in the image. Students were to upload a photo of themselves and have the program determine their age (ToolAge) and then also enter their real age (True Age). A regression model was made to predict true age based on the tool age. This model uses information just from the men.  Predict the true age of a man if the age predicted by the Microsoft tool is 40.