STA 301- Statistics & Probability

Assessment

Week 2

STA 301-Assessment-Week 2
STA 301-Assessment-Week 2


  • The lower class limit in a class is defined as:
    1. the midpoint of the previous class
    2. the largest value in the class
    3. the smallest value in the class
    4. the midpoint of the class

  • What is the midpoint of the class interval (10-30)?
    1. 10
    2. 20
    3. 10
    4. 15

  • If a data set has a total of 100 values and a particular value occurs 10 times, what is its percentage relative frequency?
    1. 10%
    2. 5%
    3. 50%
    4. 1%

  • What is the range of the dataset: {4, 5, 8, 11, 14}?
    1. 14
    2. 2
    3. 10
    4. 5

  • What is the class interval for the following dataset? 23, 34,25, 27, 29, 31, 33, 35, 37, 39, 41
    1. Cannot be determined from the given information
    2. 10
    3. 2
    4. 8

  • The cumulative frequency of the largest value in a data set is equal to:
    1. the mean of the data set
    2. the total number of values in the data set is cf
    3. the median of the data set
    4. the mode of the data set

  • The points on a frequency polygon are connected by:
    1. curved lines
    2. straight lines
    3. broken lines
    4. dotted lines

  • Which of the following is called Symmetric Curve?
    1. the U-shaped frequency curve
    2. none of these
    3. the extremely skewed frequency curve
    4. the moderately skewed frequency curve

  • Which of the following is true about a frequency curve?
    1. It can be used to determine the median of a data set
    2. It can be used to identify the shape of a data set
    3. It can be used to determine the range of a data set
    4. It can be used to determine the mode of a data set

  • What does the purpose of stem in a stem-and-leaf plot represent?
    1. The frequency of each data point
    2. The first digit(s) of each data point
    3. None of the above
    4. The midpoint of each bin

  • What type of data is required to calculate the mode?
    1. Quantitative data
    2. None of the above
    3. Both categorical and quantitative data
    4. Categorical data

  • What is represented on the x-axis in a dot plot?
    1. The frequency of each value
    2. The categories of the categorical variable
    3. None of the above
    4. The values of the quantitative variable

  • What is the purpose of a stem-and-leaf plot?
    1. To show the individual values of a data set
    2. To show the mean and standard deviation of a data set


THE END 😊