Which of the following describes qualitative data? A) Values that can be measured numerically B) Values that represent categories or characteristics C) Values that are always whole numbers D) Values that include decimals and fractions

Hair color (black, brown, blonde) is an example of which level of measurement?

Which level of measurement has a true zero point?

Temperature in degrees Celsius is an example of:

Which of the following is quantitative discrete data? A) Height of students B) Weight of a baby C) Number of books owned D) Time to finish a test

Satisfaction ratings: Poor, Fair, Good, Excellent are what level of measurement?

Which statement best describes continuous data? A) It is counted in whole numbers only B) It is measured and can take any value within a range C) It consists of labels with no order D) It always has a true zero

“Number of siblings” falls in what kind of data?

Which of the following is NOT a level of measurement? A) Nominal B) Ordinal C) Cumulative D) Ratio

Income in pesos is an example of:

What does the mean represent? A) The middle value B) The most frequent value C) The arithmetic average D) The difference between highest and lowest

Which measure is MOST affected by outliers? A) Mean B) Median C) Mode D) Range

Find the mode of: 4, 5, 5, 6, 7, 5, 8, 4, 6

The median is best used when: A) Data are symmetric B) Data are skewed or have outliers C) You want the most frequent category D) All values are the same

What is the median of: 12, 21, 15, 18, 24?

For grouped data, the mean uses which value for each class interval?

A data set can have: A) Only one mode B) No mode, one mode, or multiple modes C) Exactly two modes always D) At most two modes

Modal class refers to: A) The class with the smallest frequency B) The class with the highest frequency C) The middle class D) The first class in the table

Find the mean of: 85, 90, 78, 92, 88

If n is even, the median is: A) The first value B) The last value C) The average of the two middle values D) The larger of the two middle values

In Excel, what function gives the median?

What is the simplest measure of variability?

Standard deviation is the ________ of variance.

Which scenario shows “High Mean + Small SD”? A) Most students scored far below average B) Scores are widely spread C) Most scored close to the high average D) Half scored very high, half very low

Sample variance uses denominator:

Population standard deviation symbol is:

If Team A has SD = 5.2 and Team B has SD = 1.6, then: A) Team A is more consistent B) Team B is more consistent C) Both are equally consistent D) Cannot be determined

A discrete random variable: A) Can take any value in an interval B) Is always measured C) Takes countable distinct values D) Has values that are only negative

If X = number of tails in 2 coin tosses, possible values of X are:

The expected value E(X) is also called: