Page 2 - Midterm Exam Questions

26.04.2020 M dterm Make-up

3. What s stat st cs?

Choose the correct answer below.

A. It s the sc ence that deals w th collect on, class f cat on, analys s, and nterpretat on of nformat on or data.
B. It s the process used to ass gn numbers to var ables of nd v dual populat on un ts.
C. It s a character st c or property of an nd v dual exper mental un t.
D. It s an est mate or pred ct on or some other general zat on about a populat on based on nformat on conta ned n a sample.

4. Expla n the d fference between qual tat ve and quant tat ve data.

Choose the correct answer below.

A. Quant tat ve data are collected from an observat onal study, wh le qual tat ve data are from a des gned exper ment.
B. Quant tat ve data are data from a sample, wh le qual tat ve data are data from a populat on.
C. Quant tat ve data are categor cal n nature, wh le qual tat ve data are numer cal n nature.
D. Quant tat ve data are numer cal n nature, wh le qual tat ve data are categor cal n nature.
E. Quant tat ve data are data from a populat on, wh le qual tat ve data are data from a sample.

F. Quant tat ve data are collected from a des gned exper ment, wh le qual tat ve data are from an observat onal study.

5. If a populat on data set s normally d str buted, what s the proport on of measurements you would expect to fall w th n the follow ng ntervals?

a. μ ± σ
b. μ ± 2σ
c. μ ± 3σ

a. P(μ − σ ≤ x ≤ + σ ) = (Round to two dec mal places as needed.)
μ
x
b. P(μ − 2σ ≤ ≤ + 2 )σ = (Round to two dec mal places as needed.)
μ
c. P(μ − 3σ ≤ ≤ + 3 )σ = (Round to two dec mal places as needed.)
x
μ

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