Test Your Progress

What is the weekly median expense on fast food by Anu an undergraduate student.

• 160

• 90

• 100

• 80

Answer explanation

Median is the middle score (midpoint of any given data)

To find median

First arrange weekly expense in ascending order. total no of N is 6

Median is N/2 therefore 6/2 = 3

When N is even number median is calculated by taking the average of two midpoints

in this data

value of 3score + 4th score divided by two

therefore 80 + 100 / 2 = 180/2 = 90

Describe the histogram:

• Negatively Skewed

• Symmetrical
• Positively Skewed

• Platykurtic

Answer explanation

The word skew means slope or steepness

The data has slope to the right side. in other words the slope is above the mean. therefore the histogram is positively skewed. It will also called right skewed

Describe the shape of the graph.

• Skewed right
• Skewed left
• Uniform

• Symmetrical

Answer explanation

When a data is such that equal number of scores are above and below the average it is called symmetrical data also called normal curve.
In such a data the measures of central tendency (mean, median and mode) all lie on the same point.

A way to describe the shape of a data display that indicates most of the data is on one side of the curve is.

• symmetric
• unimodal
• skewed
• kurtic

How peak or how flat is the curve in the middle distribution refers to the _______.

• skewness

• kurtosis

• bimodal

• median

Which measure is used to determine whether the distribution is heavy-tailed or light-tailed?

• skewness

• kurtosis

• variance

• standard deviation

Items are more closely clustered around the mean

• Mesokurtic

• Leptokurtic

• Platykurtic

• likokurtic

The value of mode is maximum and the value of mean is minimum in a ______ curve

• Positively skewed

• Negatively skewed

• Normal(no skew)

The mean of a data set can be found by...

• subtracting the minimum from the maximum

• choosing the middle number

• choosing the number that occurs most

• finding the sum of the numbers and then dividing by the total amount of numbers in the data set

The mean of a data set can be found by...

• subtracting the minimum from the maximum

• choosing the middle number

• choosing the number that occurs most

• finding the sum of the numbers and then dividing by the total amount of numbers in the data set