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【简答题】
水准测量时，设每站高差观测中误差为±3mm，若1km观测了15个测站，则1km的高差观测中误差为 。
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举一反三
【单选题】在一次体育测试中，小芳所在小组8人的成绩分别是：46，47，48，48，49，49，49，50，则8人体育成绩的中位数是（ ）
A.
47
B.
48
C.
48.5
D.
49
【简答题】估算。 304+4988 ≈ 4139 ÷48 ≈ 703 ×49 ≈ 6943-2150 ≈
【单选题】Variances:
A.
are quantitative expressions of action plans
B.
provide feedback by comparing results with plans and by highlighting deviations from plans
C.
are deviations from a plan
D.
ignore areas that are presumed to be running smoothly
【单选题】Activity-level variances plus flexible-budget variances equals:
A.
total master-budget variances
B.
total standard variances
C.
total actual variances
D.
None of these answers is correct.
【判断题】flexible budget allows us to isolate activity variances and revenue and spending variances.
A.
正确
B.
错误
【单选题】The test for the equality of two population variances is based on the
A.
ratio of the two sample variances
B.
difference between the two sample variances
C.
difference between the two population variances
D.
difference between the sample variances divided by the difference between the sample means
【单选题】The test for the equality of two population variances is based on:
A.
the difference between the two sample variances.
B.
the ratio of the two sample variances.
C.
the difference between the two population variances.
D.
the difference between the sample variances divided by the difference between the sample means.
【单选题】Rate variances are the same as ________ variances. Efficiency variances are the same as ________ variances.
A.
spending; effective
B.
activity; static
C.
usage; quantity
D.
price; quantity
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