Chapter 4 SmartBook

The data points are connected to create a graph.

Which one of these statements is not part of the description of a scatter diagram? Each observation is measured with two variables. The data points are connected to create a graph. One variable is scaled on the horizontal axis, the other on the vertical axis. It may show a relationship or lack of relationship between two variables.

B. Lp =(n+1)P/100

Choose the correct formula for the location, Lp ,from n observations where P is the desired percentile.

A graphical technique to show the relationship between two variables,

Choose the statement that best describes a scatter diagram. A random collection of points that illustrates the distribution of a variable, A graphical technique to show the relationship between two variables, A plot that shows how the observations are scattered within the range of the variable.

the standard deviation

Each of the following is a measure of position in a set of data except: the median the quartiles the deciles the standard deviation

Ordinal Nominal

Select all that apply Contingency tables are used for summarizing data of what level? Select all that apply. Ratio Ordinal Interval Nominal

Place a dot along a horizontal scale for each observation. "Pile up" dots that are too close to show separately.

Select all that apply When you create a dot plot, you do which of these operations? Select all that apply. Place a dot along a horizontal scale for each observation. "Pile up" dots that are too close to show separately. Add a vertical axis showing frequency of observations. Connect adjacent dots to create a polygon.

The distance between the first and third quartile.

The interquartile range is a measure of dispersion usually used along with the median. What is the definition of interquartile range? The distance between the first and third quartile. The size of a quartile. The number of observations in a quartile. The distance between the first and second quartile.

5.61

What would the location of the 11th percentile be for a data set with 50 observations? 5.50 50.00 5.61 5.00

34.03

What would the location of the 83rd percentile be for a data set with 40 observations? 33.20 34.03 32.00 40.00

standard deviation

Which of the following is not a measure of position? 90th percentile first quartile standard deviation ninth decile

Favorite Color and Gender

Which one of the following pairs of variables would be best-suited for a contingency table? Multiple choice question. Favorite Color and Gender Miles per gallon and Car Weight Size of House and Price of House Hours Studied and Test Grade

Positively Skewed

Identify the shape of the distribution shown in the picture. Negatively Skewed Symmetrical Positively Skewed Bimodal

Negatively Skewed

Identify the shape of the distribution shown in the picture. Symmetrical Bimodal Positively Skewed Negatively Skewed

Symmetrical

Identify the shape of the distribution shown in the picture. Symmetrical Negatively Skewed Positively Skewed Bimodal

Each paired observation is represented by a single dot One variable is scaled on the horizontal axis and the other is scaled on the vertical axis

Select all that apply Which of the following statements describe a feature of a scatter diagram? Select all that apply. The vertical axis shows the frequency of occurrence of each set of observations. Each paired observation is represented by a single dot The data points are connected by a line to make a polygon. One variable is scaled on the horizontal axis and the other is scaled on the vertical axis

The distribution is negatively skewed.

Suppose a given data set has the following characteristics: Minimum value: 120 Q1: 160 Q2: 190 Q3: 200 Maximum Value: 220 Which of the following is true about the distribution of the data? The distribution is positively skewed. The distribution is negatively skewed. Nothing can be said about the skew of the distribution. The distribution is symmetrical.

Dots "piled up" for observations very close together. A horizontal line indicating the possible values of the data. One dot for each observation.

Select all that apply Which of the following are features of a dot plot? Select all that apply. Dots "piled up" for observations very close together. A line connecting the dots that represent individual observations. A horizontal line indicating the possible values of the data. One dot for each observation.