7. The list shows the number of visitors entering the zoo each hour on Saturday. What is the interquartile range of the data? 30, 48, 22, 47, 10, 30, 38, 20, 45, 15 Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.

Q: Describe the main measures of central tendency and dispersion. Why are they important in analyzing…

A: A measure of central tendency helps to identify the location of a dataset, whereas a measure of…

Q: Give 2 examples of Mode in Measure of central tendency to grouped data

A: 1)The following table represents the number of times that 100 randomly selected students ate at the…

Q: The top schools HCC students transfer to are below from highest to lowest.  This type of data is…

A: We have given the following statement

Q: What is the coefficient of determination for the data above?

A: Step-by-step procedure to find the regression line using Excel: In Excel sheet, enter x and y in…

Q: Which of the following sets of data represent valid functions? OS = {(0, – 1), (3, 1), (6, 4), (7,…

A: Function: A function from X to Y denoted by f:X→Y is defined as the given set of order pair x, y…

Q: At the end of the semester the lecturer runs a regression using the student's final grade as the…

A: Let the regression equation be y=mx+b where, y is the dependent variable mx is the estimated…

Q: Distinguish briefly the Parameters and statistics

A: A parameters is a values that describes some aspect of a population . A parameters may be very…

Q: A residual plot has data points that are all very close to the x-axis. What does this say about the…

A: A residual value is defined as the difference between the observed value and the expected value…

Q: Which criterion is used for deciding which regression line fits best?

A: Least-squares property: If the sum of the squares of the residuals is expressed as smallest sum…

Q: how will you relate the formulas for quartiles and deciles of grouped data?

A: The formula for the ith quartile is: Qi=L+in4-cff.w Where L is lower bound of the class, c.f is…

Q: How are the moving averages calculated?

A: A moving average is a technique to get an overall idea of the trends in a data set; it is an average…

Q: To examine bivariate data graphically, the best choice is two side by side histograms? Define this…

A: Introduction: A histogram is a graphical display mainly used to plot a univariate continuous…

Q: The data used for this assignment was extracted from a NBC News website story that appeared on…

A: 127 1050 130 1050 101 700 88 670 83 640 87 640 89 560

Q: Why shouldn't you extrapolate and how to deal with samples reading out the dynamic range?

A: Extrapolation is prediction far outside the range of the data. These predictions may be incorrect if…

Q: The most commonly used measure of central tendency

A: here use basic of central tendency

Q: solve the range and median only of the two tables

A: RANGE calculated as the difference between the lower limit of the minimum interval and upper limit…

Q: how to take correlation analysis from below data set via spss.

A: The data set provides information on temperature change with respect to baseline climatology across…

Q: Should averages be taken literally? What are the drawbacks?

A: Average is a summary statistic that represents the center point or typical value of a dataset. It…

Q: how do I describe the "measures of center and variability" of a chart?

A: The commonly used measures of center tendency are, Mean Median Mode In charts like histogram, the…

Q: Mean, Median and Mode for data set (Z, 10, 0.4, 0, -11, N, -20, M, -11.1, W, N): Mean = -5.28,…

A: Given : -20, -11.1, -11, 0, 0.4, 10, M, N, N, W, Z Mean = ∑Xin Mean = -20+-11.1+-11+0+0.4+106 Mean =…

Q: Regression and correlation are used for estimation. Select one: True False

A: The most commonly used estimation techniques for investigating the relationship between two…

Q: What are the best measures used used for data variation or dispersion

A: Measures of variability: The measure of variability or the measures of dispersion can be measured…

Q: Describe why a. data description using graphical methods sometimes is not sufficient b. measures of…

A: Here we have to describe,  a. Why the graphical methods sometimes is not sufficient? b. Why measures…

Q: How does the squared curvilinear correlation calculated?

A:

Q: Indicate that they are qualitative and quantitative data, give 2 specific examples and indicate when…

A: To give examples of qualitative and quantitative data and provide the definition

Q: You can assess normality of data using

A:

Q: Given a data point x, what does the z-score tell us about x?

A: Solution: The Z score is also called as standard curve it tell us that how far from the data points…

Q: Duration is what typye of data?

A:

Q: please show the work for the problems with an explanation versus just shwoing calculated data.

A: To check the relationship b/w age and miles on the car.

Q: Describe the range of values for the correlation coefficient.

A: r has a range from -1 to +1 inclusive. i.e., (-1<= r <= 1) Therefore the Range of correlation…

Q: Define the term relationship as a perfect positive cross-correlation?

A:

Q: Explain what a box and whisker plot is and how we use it to understand central tendency and…

A: Box and whisker plot:A type of graph used to display patterns of quantitative data is called a…

Q: Provide a reason why the classication of data is important.

A: In this case, we need to find the reason for the importance of data classification.

Q: recent experiment included measuring the weight of a package of raw almonds.  This type of data…

A: We have to find given probability